TY 2020 Form 990

(A) Name and title	(B) Average hours per week (list any hours for related organizations below dotted line)	(C) Position (do not check more than one box, unless person is both an officer and a director/trustee)	(E) Reportable compensation from related organizations (W-2/1099-MISC)
(1) Patricia Hutchins...................................................................... Executive Direc	40.00 ................. 0.00		X	64,152	0	0
(2) Temple Blackwood...................................................................... President	2.90 ................. 0.00	X	X	2,755	0	0
(3) Robert Downes deceased...................................................................... Former Pres.	2.08 ................. 0.00	X	X	0	0	0
(4) Donald Small...................................................................... Treasurer	4.35 ................. 0.00	X	X	0	0	0
(5) Kay Hightower...................................................................... Secretary	3.23 ................. 0.00	X	X	0	0	0
(6) Steve Brookman...................................................................... Trustee	1.25 ................. 0.00	X		0	0	0
(7) Marianne Buchanan...................................................................... Trustee	0.58 ................. 0.00	X		0	0	0
(8) Hans Carlson...................................................................... Trustee	0.87 ................. 0.00	X		0	0	0
(9) Barbara Jackson...................................................................... Trustee	2.31 ................. 0.00	X		0	0	0
(10) Jeanmarie Reed Term Exp...................................................................... Former Trustee	1.06 ................. 0.00	X		0	0	0
(11) Johanna Sweet Term Exp...................................................................... Former Trustee	0.23 ................. 0.00	X		0	0	0
(12) David Wyman...................................................................... Vice President	1.42 ................. 0.00	X	X	0	0	0
(13) Pauline A Hutchins deceased...................................................................... Honor. Trustee	0.00 ................. 0.00	X		0	0	0
(14) Barbara Cooper...................................................................... Trustee	0.10 ................. 0.00	X		0	0	0
(15) Steve Shea...................................................................... Trustee	0.92 ................. 0.00	X		0	0	0
(16) Robert Kilpeck...................................................................... Trustee	0.10 ................. 0.00	X		0	0	0

- TIN:

SCHEDULE A
(Form 990 or 990EZ)

Department of the Treasury
Internal Revenue Service

Public Charity Status and Public Support

Complete if the organization is a section 501(c)(3) organization or a section 4947(a)(1) nonexempt charitable trust.
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Attach to Form 990 or Form 990-EZ.
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Go to www.irs.gov/Form990 for instructions and the latest information.

OMB No. 1545-0047

2020

Open to Public
Inspection

Name of the organization

Castine Scientific Society
dba Wilson Museum

Employer identification number

23-7059689

Part I

Reason for Public Charity Status (All organizations must complete this part.) See instructions.

The organization is not a private foundation because it is: (For lines 1 through 12, check only one box.)

A church, convention of churches, or association of churches described in section 170(b)(1)(A)(i).

A school described in section 170(b)(1)(A)(ii). (Attach Schedule E (Form 990 or 990-EZ).)

A hospital or a cooperative hospital service organization described in section 170(b)(1)(A)(iii).

A medical research organization operated in conjunction with a hospital described in section 170(b)(1)(A)(iii). Enter the hospital's name, city, and state:

An organization operated for the benefit of a college or university owned or operated by a governmental unit described in section 170(b)(1)(A)(iv). (Complete Part II.)

A federal, state, or local government or governmental unit described in section 170(b)(1)(A)(v).

An organization that normally receives a substantial part of its support from a governmental unit or from the general public described in section 170(b)(1)(A)(vi). (Complete Part II.)

A community trust described in section 170(b)(1)(A)(vi). (Complete Part II.)

An agricultural research organization described in 170(b)(1)(A)(ix) operated in conjunction with a land-grant college or university or a non-land grant college of agriculture. See instructions. Enter the name, city, and state of the college or university:

An organization that normally receives: (1) more than 331/3% of its support from contributions, membership fees, and gross receipts from activities related to its exempt functions—subject to certain exceptions, and (2) no more than 331/3% of its support from gross investment income and unrelated business taxable income (less section 511 tax) from businesses acquired by the organization after June 30, 1975. See section 509(a)(2). (Complete Part III.)

An organization organized and operated exclusively to test for public safety. See section 509(a)(4).

An organization organized and operated exclusively for the benefit of, to perform the functions of, or to carry out the purposes of one or more publicly supported organizations described in section 509(a)(1) or section 509(a)(2). See section 509(a)(3). Check the box in lines 12a through 12d that describes the type of supporting organization and complete lines 12e, 12f, and 12g.

Type I. A supporting organization operated, supervised, or controlled by its supported organization(s), typically by giving the supported organization(s) the power to regularly appoint or elect a majority of the directors or trustees of the supporting organization. You must complete Part IV, Sections A and B.

Type II. A supporting organization supervised or controlled in connection with its supported organization(s), by having control or management of the supporting organization vested in the same persons that control or manage the supported organization(s). You must complete Part IV, Sections A and C.

Type III functionally integrated. A supporting organization operated in connection with, and functionally integrated with, its supported organization(s) (see instructions). You must complete Part IV, Sections A, D, and E.

Type III non-functionally integrated. A supporting organization operated in connection with its supported organization(s) that is not functionally integrated. The organization generally must satisfy a distribution requirement and an attentiveness requirement (see instructions). You must complete Part IV, Sections A and D, and Part V.

Check this box if the organization received a written determination from the IRS that it is a Type I, Type II, Type III functionally integrated, or Type III non-functionally integrated supporting organization.

Enter the number of supported organizations ...............................

Provide the following information about the supported organization(s).

(i) Name of supported organization	(ii) EIN	(iv) Is the organization listed in your governing document?		(v) Amount of monetary support (see instructions)	(vi) Amount of other support (see instructions)
(i) Name of supported organization	(ii) EIN	Yes	No	(v) Amount of monetary support (see instructions)	(vi) Amount of other support (see instructions)


Total

For Paperwork Reduction Act Notice, see the Instructions for
Form 990 or 990-EZ.

Cat. No. 11285F

Schedule A (Form 990 or 990-EZ) 2020

Page 2

Part II

Support Schedule for Organizations Described in Sections 170(b)(1)(A)(iv) and 170(b)(1)(A)(vi)
(Complete only if you checked the box on line 5, 7, or 8 of Part I or if the organization failed to qualify under Part III. If the organization failed to qualify under the tests listed below, please complete Part III.)

Section A. Public Support

Calendar year (or fiscal year beginning in)		(a) 2016	(b) 2017	(c) 2018	(d) 2019	(e) 2020	(f) Total
1	Gifts, grants, contributions, and membership fees received. (Do not include any "unusual grant.") ..	46,695	38,299	41,444	50,167	97,293	273,898
2	Tax revenues levied for the organization's benefit and either paid to or expended on its behalf....						0
3	The value of services or facilities furnished by a governmental unit to the organization without charge..						0
4	Total. Add lines 1 through 3	46,695	38,299	41,444	50,167	97,293	273,898
5	The portion of total contributions by each person (other than a governmental unit or publicly supported organization) included on line 1 that exceeds 2% of the amount shown on line 11, column (f)..						49,175
6	Public support. Subtract line 5 from line 4.						224,723

Section B. Total Support

Calendar year (or fiscal year beginning in)		(a) 2016	(b) 2017	(c) 2018	(d) 2019	(e) 2020	(f) Total
7	Amounts from line 4..	46,695	38,299	41,444	50,167	97,293	273,898
8	Gross income from interest, dividends, payments received on securities loans, rents, royalties and income from similar sources...	7,505	7,386	12,026	22,761	23,339	73,017
9	Net income from unrelated business activities, whether or not the business is regularly carried on..						0
10	Other income. Do not include gain or loss from the sale of capital assets (Explain in Part VI.)..	5,077	254	1,348	1,254	400	8,333
11	Total support. Add lines 7 through 10						355,248

Gross receipts from related activities, etc. (see instructions) ..................

11,745

First 5 years. If the Form 990 is for the organization's first, second, third, fourth, or fifth tax year as a section 501(c)(3) organization, check this box and stop here........................................ right arrow

Section C. Computation of Public Support Percentage

Public support percentage for 2020 (line 6, column (f) divided by line 11, column (f)) .........

63.260 %

Public support percentage for 2019 Schedule A, Part II, line 14 ...............

72.860 %

16a

33 1/3% support test—2020. If the organization did not check the box on line 13, and line 14 is 33 1/3% or more, check this box
and stop here. The organization qualifies as a publicly supported organization ....................... right arrow

33 1/3% support test—2019. If the organization did not check a box on line 13 or 16a, and line 15 is 33 1/3% or more, check this
box and stop here. The organization qualifies as a publicly supported organization ..................... right arrow

17a

10%-facts-and-circumstances test—2020. If the organization did not check a box on line 13, 16a, or 16b, and line 14
is 10% or more, and if the organization meets the "facts-and-circumstances" test, check this box and stop here. Explain
in Part VI how the organization meets the "facts-and-circumstances" test. The organization qualifies as a publicly supported
organization ..................................................... right arrow

10%-facts-and-circumstances test—2019. If the organization did not check a box on line 13, 16a, 16b, or 17a, and line
15 is 10% or more, and if the organization meets the "facts-and-circumstances" test, check this box and stop here.
Explain in Part VI how the organization meets the "facts-and-circumstances" test. The organization qualifies as a publicly
supported organization ................................................ right arrow

Private foundation. If the organization did not check a box on line 13, 16a, 16b, 17a, or 17b, check this box and see
instructions ..................................................... right arrow

Schedule A (Form 990 or 990-EZ) 2020

Page 3

Part III

Support Schedule for Organizations Described in Section 509(a)(2)
(Complete only if you checked the box on line 10 of Part I or if the organization failed to qualify under Part II. If the organization fails to qualify under the tests listed below, please complete Part II.)

Section A. Public Support

Calendar year (or fiscal year beginning in)		(a) 2016	(b) 2017	(c) 2018	(d) 2019	(e) 2020	(f) Total
1	Gifts, grants, contributions, and membership fees received. (Do not include any "unusual grants.") .
2	Gross receipts from admissions, merchandise sold or services performed, or facilities furnished in any activity that is related to the organization's tax-exempt purpose
3	Gross receipts from activities that are not an unrelated trade or business under section 513 .....
4	Tax revenues levied for the organization's benefit and either paid to or expended on its behalf...
5	The value of services or facilities furnished by a governmental unit to the organization without charge
6	Total. Add lines 1 through 5
7a	Amounts included on lines 1, 2, and 3 received from disqualified persons
b	Amounts included on lines 2 and 3 received from other than disqualified persons that exceed the greater of $5,000 or 1% of the amount on line 13 for the year.
c	Add lines 7a and 7b..
8	Public support. (Subtract line 7c from line 6.)

Section B. Total Support

Calendar year (or fiscal year beginning in)		(a) 2016	(b) 2017	(c) 2018	(d) 2019	(e) 2020	(f) Total
9	Amounts from line 6...
10a	Gross income from interest, dividends, payments received on securities loans, rents, royalties and income from similar sources..
b	Unrelated business taxable income (less section 511 taxes) from businesses acquired after June 30, 1975.
c	Add lines 10a and 10b.
11	Net income from unrelated business activities not included in line 10b, whether or not the business is regularly carried on.
12	Other income. Do not include gain or loss from the sale of capital assets (Explain in Part VI.) ..
13	Total support. (Add lines 9, 10c, 11, and 12.)..

First 5 years. If the Form 990 is for the organization's first, second, third, fourth, or fifth tax year as a section 501(c)(3) organization,
check this box and stop here............................................. right arrow

Section C. Computation of Public Support Percentage

Public support percentage for 2020 (line 8, column (f) divided by line 13, column (f)) .........

Public support percentage from 2019 Schedule A, Part III, line 15 ...............

Section D. Computation of Investment Income Percentage

Investment income percentage for 2020 (line 10c, column (f) divided by line 13, column (f)) ......

Investment income percentage from 2019 Schedule A, Part III, line 17 .............

19a

331/3% support tests—2020. If the organization did not check the box on line 14, and line 15 is more than 33 1/3%, and line 17 is not more than 33 1/3%, check this box and stop here. The organization qualifies as a publicly supported organization ....... right arrow

33 1/3% support tests—2019. If the organization did not check a box on line 14 or line 19a, and line 16 is more than 33 1/3% and line 18 is not more than 33 1/3%, check this box and stop here. The organization qualifies as a publicly supported organization .... right arrow

Private foundation. If the organization did not check a box on line 14, 19a, or 19b, check this box and see instructions .... right arrow

Schedule A (Form 990 or 990-EZ) 2020

Page 4

Part IV

Supporting Organizations

(Complete only if you checked a box on line 12 of Part I. If you checked box 12a, of Part I, complete Sections A and B. If you checked box 12b, of Part I, complete Sections A and C. If you checked box 12c, of Part I, complete Sections A, D, and E. If you checked box12d, of Part I, complete Sections A and D, and complete Part V.)

Section A. All Supporting Organizations

Yes

Are all of the organization’s supported organizations listed by name in the organization’s governing documents?
If "No," describe in Part VI how the supported organizations are designated. If designated by class or purpose,
describe the designation. If historic and continuing relationship, explain.

Did the organization have any supported organization that does not have an IRS determination of status under section 509(a)(1) or (2)? If "Yes," explain in Part VI how the organization determined that the supported organization was described in section 509(a)(1) or (2).

Did the organization have a supported organization described in section 501(c)(4), (5), or (6)? If "Yes," answer lines 3b and 3c below.

Did the organization confirm that each supported organization qualified under section 501(c)(4), (5), or (6) and satisfied the public support tests under section 509(a)(2)? If "Yes," describe in Part VI when and how the organization made the determination.

Did the organization ensure that all support to such organizations was used exclusively for section 170(c)(2)(B) purposes? If "Yes," explain in Part VI what controls the organization put in place to ensure such use.

Was any supported organization not organized in the United States ("foreign supported organization")? If “Yes” and if you checked box 12a or 12b in Part I, answer lines 4b and 4c below.

Did the organization have ultimate control and discretion in deciding whether to make grants to the foreign supported organization? If “Yes,” describe in Part VI how the organization had such control and discretion despite being controlled or supervised by or in connection with its supported organizations.

Did the organization support any foreign supported organization that does not have an IRS determination under sections 501(c)(3) and 509(a)(1) or (2)? If “Yes,” explain in Part VI what controls the organization used to ensure that all support to the foreign supported organization was used exclusively for section 170(c)(2)(B) purposes.

Did the organization add, substitute, or remove any supported organizations during the tax year? If “Yes,” answer lines 5b and 5c below (if applicable). Also, provide detail in Part VI, including (i) the names and EIN numbers of the supported organizations added, substituted, or removed; (ii) the reasons for each such action; (iii) the authority under the organization's organizing document authorizing such action; and (iv) how the action was accomplished (such as by amendment to the organizing document).

Type I or Type II only. Was any added or substituted supported organization part of a class already designated in the organization's organizing document?

Substitutions only. Was the substitution the result of an event beyond the organization's control?

Did the organization provide support (whether in the form of grants or the provision of services or facilities) to anyone other than (i) its supported organizations, (ii) individuals that are part of the charitable class benefited by one or more of its supported organizations, or (iii) other supporting organizations that also support or benefit one or more of the filing organization’s supported organizations? If “Yes,” provide detail in Part VI.

Did the organization provide a grant, loan, compensation, or other similar payment to a substantial contributor (defined in section 4958(c)(3)(C)), a family member of a substantial contributor, or a 35% controlled entity with regard to a substantial contributor? If “Yes,” complete Part I of Schedule L (Form 990 or 990-EZ) .

Did the organization make a loan to a disqualified person (as defined in section 4958) not described in line 7? If “Yes,” complete Part I of Schedule L (Form 990 or 990-EZ).

Was the organization controlled directly or indirectly at any time during the tax year by one or more disqualified persons, as defined in section 4946 (other than foundation managers and organizations described in section 509(a)(1) or (2))? If “Yes,” provide detail in Part VI.

Did one or more disqualified persons (as defined in line 9a) hold a controlling interest in any entity in which the supporting organization had an interest? If “Yes,” provide detail in Part VI.

Did a disqualified person (as defined in line 9a) have an ownership interest in, or derive any personal benefit from, assets in which the supporting organization also had an interest? If “Yes,” provide detail in Part VI.

10a

Was the organization subject to the excess business holdings rules of section 4943 because of section 4943(f) (regarding certain Type II supporting organizations, and all Type III non-functionally integrated supporting organizations)? If “Yes,” answer line 10b below.

10a

Did the organization have any excess business holdings in the tax year? (Use Schedule C, Form 4720, to determine whether the organization had excess business holdings).

10b

Schedule A (Form 990 or 990-EZ) 2020

Page 5

Part IV

Supporting Organizations (continued)

Yes

Has the organization accepted a gift or contribution from any of the following persons?

A person who directly or indirectly controls, either alone or together with persons described in lines 11b and 11c below, the governing body of a supported organization?

11a

A family member of a person described in 11a above?

11b

A 35% controlled entity of a person described in line 11a or 11b above? If “Yes” to 11a, 11b, or 11c, provide detail in Part VI.

11c

Section B. Type I Supporting Organizations

Yes

Did the officers, directors, trustees, or membership of one or more supported organizations have the power to regularly appoint or elect at least a majority of the organization’s directors or trustees at all times during the tax year? If “No,” describe in Part VI how the supported organization(s) effectively operated, supervised, or controlled the organization’s activities. If the organization had more than one supported organization, describe how the powers to appoint and/or remove directors or trustees were allocated among the supported organizations and what conditions or restrictions, if any, applied to such powers during the tax year.

Did the organization operate for the benefit of any supported organization other than the supported organization(s) that operated, supervised, or controlled the supporting organization? If “Yes,” explain in Part VI how providing such benefit carried out the purposes of the supported organization(s) that operated, supervised or controlled the supporting organization.

Section C. Type II Supporting Organizations

Yes

Were a majority of the organization’s directors or trustees during the tax year also a majority of the directors or trustees of each of the organization’s supported organization(s)? If “No,” describe in Part VI how control or management of the supporting organization was vested in the same persons that controlled or managed the supported organization(s).

Section D. All Type III Supporting Organizations

Yes

Did the organization provide to each of its supported organizations, by the last day of the fifth month of the organization’s tax year, (i) a written notice describing the type and amount of support provided during the prior tax year, (ii) a copy of the Form 990 that was most recently filed as of the date of notification, and (iii) copies of the organization’s governing documents in effect on the date of notification, to the extent not previously provided?

Were any of the organization’s officers, directors, or trustees either (i) appointed or elected by the supported organization(s) or (ii) serving on the governing body of a supported organization? If "No," explain in Part VI how the organization maintained a close and continuous working relationship with the supported organization(s).

By reason of the relationship described in line 2 above, did the organization’s supported organizations have a significant voice in the organization’s investment policies and in directing the use of the organization’s income or assets at all times during the tax year? If "Yes," describe in Part VI the role the organization’s supported organizations played in this regard.

Section E. Type III Functionally-Integrated Supporting Organizations

Check the box next to the method that the organization used to satisfy the Integral Part Test during the year (see instructions):

The organization satisfied the Activities Test. Complete line 2 below.

The organization is the parent of each of its supported organizations. Complete line 3 below.

The organization supported a governmental entity. Describe in Part VI how you supported a government entity (see instructions)

Activities Test. Answer lines 2a and 2b below.

Yes

Did substantially all of the organization’s activities during the tax year directly further the exempt purposes of the supported organization(s) to which the organization was responsive? If "Yes," then in Part VI identify those supported organizations and explain how these activities directly furthered their exempt purposes, how the organization was responsive to those supported organizations, and how the organization determined that these activities constituted substantially all of its activities.

Did the activities described in line 2a, above constitute activities that, but for the organization’s involvement, one or more of the organization’s supported organization(s) would have been engaged in? If "Yes," explain in Part VI the reasons for the organization’s position that its supported organization(s) would have engaged in these activities but for the organization’s involvement.

Parent of Supported Organizations. Answer lines 3a and 3b below.

Did the organization have the power to regularly appoint or elect a majority of the officers, directors, or trustees of each of the supported organizations?If "Yes" or "No", provide details in Part VI.

Did the organization exercise a substantial degree of direction over the policies, programs and activities of each of its supported organizations? If "Yes," describe in Part VI. the role played by the organization in this regard.

Schedule A (Form 990 or 990-EZ) 2020

Page 6

Part V

Type III Non-Functionally Integrated 509(a)(3) Supporting Organizations

Check here if the organization satisfied the Integral Part Test as a qualifying trust on Nov. 20, 1970 (explain in Part VI). See instructions. All other Type III non-functionally integrated supporting organizations must complete Sections A through E.

	Section A - Adjusted Net Income		(A) Prior Year	(B) Current Year (optional)
1	Net short-term capital gain	1
2	Recoveries of prior-year distributions	2
3	Other gross income (see instructions)	3
4	Add lines 1 through 3	4
5	Depreciation and depletion	5
6	Portion of operating expenses paid or incurred for production or collection of gross income or for management, conservation, or maintenance of property held for production of income (see instructions)	6
7	Other expenses (see instructions)	7
8	Adjusted Net Income (subtract lines 5, 6 and 7 from line 4)	8

	Section B - Minimum Asset Amount		(A) Prior Year	(B) Current Year (optional)
1	Aggregate fair market value of all non-exempt-use assets (see instructions for short tax year or assets held for part of year):	1
a	Average monthly value of securities	1a
b	Average monthly cash balances	1b
c	Fair market value of other non-exempt-use assets	1c
d	Total (add lines 1a, 1b, and 1c)	1d
e	Discount claimed for blockage or other factors (explain in detail in Part VI):
2	Acquisition indebtedness applicable to non-exempt use assets	2
3	Subtract line 2 from line 1d	3
4	Cash deemed held for exempt use. Enter 0.015 of line 3 (for greater amount, see instructions).	4
5	Net value of non-exempt-use assets (subtract line 4 from line 3)	5
6	Multiply line 5 by 0.035	6
7	Recoveries of prior-year distributions	7
8	Minimum Asset Amount (add line 7 to line 6)	8

	Section C - Distributable Amount		Current Year
1	Adjusted net income for prior year (from Section A, line 8, Column A)	1
2	Enter 85% of line 1	2
3	Minimum asset amount for prior year (from Section B, line 8, Column A)	3
4	Enter greater of line 2 or line 3	4
5	Income tax imposed in prior year	5
6	Distributable Amount. Subtract line 5 from line 4, unless subject to emergency temporary reduction (see instructions)	6

Check here if the current year is the organization's first as a non-functionally-integrated Type III supporting organization (see instructions)

Schedule A (Form 990 or 990-EZ) 2020

Page 7

Part V

Type III Non-Functionally Integrated 509(a)(3) Supporting Organizations(continued)

Section D - Distributions		Current Year
1 Amounts paid to supported organizations to accomplish exempt purposes	1
2 Amounts paid to perform activity that directly furthers exempt purposes of supported organizations, in excess of income from activity	2
3 Administrative expenses paid to accomplish exempt purposes of supported organizations	3
4 Amounts paid to acquire exempt-use assets	4
5 Qualified set-aside amounts (prior IRS approval required - provide details in Part VI)	5
6 Other distributions (describe in Part VI). See instructions	6
7Total annual distributions. Add lines 1 through 6.	7
8 Distributions to attentive supported organizations to which the organization is responsive (provide details in Part VI). See instructions	8
9 Distributable amount for 2020 from Section C, line 6	9
10 Line 8 amount divided by Line 9 amount	10

Section E - Distribution Allocations (see instructions)		(i) Excess Distributions	(ii) Underdistributions Pre-2020	(iii) Distributable Amount for 2020
1 Distributable amount for 2020 from Section C, line 6
2 Underdistributions, if any, for years prior to 2019 (reasonable cause required-- explain in Part VI). See instructions.
3 Excess distributions carryover, if any, to 2020:
a From 2015.......
b From 2016.......
c From 2017.......
d From 2018.......
e From 2019.......
fTotal of lines 3a through e
g Applied to underdistributions of prior years
h Applied to 2020 distributable amount
i Carryover from 2015 not applied (see instructions)
j Remainder. Subtract lines 3g, 3h, and 3i from line 3f.
4Distributions for 2020 from Section D, line 7:
$
a Applied to underdistributions of prior years
b Applied to 2020 distributable amount
c Remainder. Subtract lines 4a and 4b from line 4.
5 Remaining underdistributions for years prior to 2020, if any. Subtract lines 3g and 4a from line 2. If the amount is greater than zero, explain in Part VI. See instructions.
6 Remaining underdistributions for 2020. Subtract lines 3h and 4b from line 1. If the amount is greater than zero, explain in Part VI. See instructions.
7 Excess distributions carryover to 2021. Add lines 3j and 4c.
8 Breakdown of line 7:
a Excess from 2016.....
b Excess from 2017.....
c Excess from 2018.....
d Excess from 2019.....
e Excess from 2020.....

Schedule A (Form 990 or 990-EZ) (2020)

Schedule A (Form 990 or 990-EZ) 2020

Page 8

Part VI

Supplemental Information. Provide the explanations required by Part II, line 10; Part II, line 17a or 17b; Part III, line 12; Part IV, Section A, lines 1, 2, 3b, 3c, 4b, 4c, 5a, 6, 9a, 9b, 9c, 11a, 11b, and 11c; Part IV, Section B, lines 1 and 2; Part IV, Section C, line 1; Part IV, Section D, lines 2 and 3; Part IV, Section E, lines 1c, 2a, 2b, 3a and 3b; Part V, line 1; Part V, Section B, line 1e; Part V Section D, lines 5, 6, and 8; and Part V, Section E, lines 2, 5, and 6. Also complete this part for any additional information. (See instructions).

Facts And Circumstances Test

Return Reference	Explanation
Support Schedule: Other Income Explanation	Other miscellaneous amounts of income such as reimbursements.
Support Schedule: Additional Supplemental Information	Part II, Section B Line 8:Gross Income from Interest/Dividends, etc., is reduced as the result of earnings from Unusual Gifts as detailed below: 2020 2019 2018 2017 2016 Total Gross Income from Int/Div $329,422 $401,032 $408,144 $343,511 $347,680 Amount Due to Unusual Gifts (306,283) (383,709) (399,328) (337,844) (340,173) -------- -------- -------- -------- --------- Part II, Sect.B Line 8 Int/Div $ 23,139 $ 17,323 $ 8,816 $ 5,667 $ 7,507 Part II, Sect.B Line 8 Rental 200 5,438 3,210 1,720 0 -------- -------- ------- -------- -------Part II, Sect.B Line 8 Total $23,339 $ 22,761 $ 12,026 $ 7,387 $ 7,507

Return Reference

Explanation

Support Schedule: Other Income Explanation

Other miscellaneous amounts of income such as reimbursements.

Support Schedule: Additional Supplemental Information

Part II, Section B Line 8:Gross Income from Interest/Dividends, etc., is reduced as the result of earnings from Unusual Gifts as detailed below: 2020 2019 2018 2017 2016 Total Gross Income from Int/Div $329,422 $401,032 $408,144 $343,511 $347,680 Amount Due to Unusual Gifts (306,283) (383,709) (399,328) (337,844) (340,173) -------- -------- -------- -------- --------- Part II, Sect.B Line 8 Int/Div $ 23,139 $ 17,323 $ 8,816 $ 5,667 $ 7,507 Part II, Sect.B Line 8 Rental 200 5,438 3,210 1,720 0 -------- -------- ------- -------- -------Part II, Sect.B Line 8 Total $23,339 $ 22,761 $ 12,026 $ 7,387 $ 7,507

Schedule A (Form 990 or 990-EZ) 2020

Additional Data

Software ID:	20011551
Software Version:	2020v4.0

- TIN:

Schedule B
(Form 990, 990-EZ,
or 990-PF)

Department of the Treasury
Internal Revenue Service

Schedule of Contributors

Attach to Form 990, 990-EZ, or 990-PF.

Go to www.irs.gov/Form990 for the latest information.

OMB No. 1545-0047

2020

Name of the organization

Castine Scientific Society
dba Wilson Museum

Employer identification number

23-7059689

Organization type (check one):

Filers of:

Section:

Form 990 or 990-EZ

501(c)( ) (enter number) organization

4947(a)(1) nonexempt charitable trust not treated as a private foundation

527 political organization

Form 990-PF

501(c)(3) exempt private foundation

4947(a)(1) nonexempt charitable trust treated as a private foundation

501(c)(3) taxable private foundation

Check if your organization is covered by the General Rule or a Special Rule.
Note: Only a section 501(c)(7), (8), or (10) organization can check boxes for both the General Rule and a Special Rule. See instructions.

General Rule

For an organization filing Form 990, 990-EZ, or 990-PF that received, during the year, contributions totaling $5,000 or more (in money or other property) from any one contributor. Complete Parts I and II. See instructions for determining a contributor's total contributions.

Special Rules

For an organization described in section 501(c)(3) filing Form 990 or 990-EZ that met the 33¹/3% support test of the regulations
under sections 509(a)(1) and 170(b)(1)(A)(vi), that checked Schedule A (Form 990 or 990-EZ), Part II, line 13, 16a, or 16b, and that received from any one contributor, during the year, total contributions of the greater of (1) $5,000 or (2) 2% of the amount on (i) Form 990, Part VIII, line 1h, or (ii) Form 990-EZ, line 1. Complete Parts I and II.

For an organization described in section 501(c)(7), (8), or (10) filing Form 990 or 990-EZ that received from any one contributor,
during the year, total contributions of more than $1,000 exclusively for religious, charitable, scientific, literary, or educational purposes, or for the prevention of cruelty to children or animals. Complete Parts I, II, and III.

For an organization described in section 501(c)(7), (8), or (10) filing Form 990 or 990-EZ that received from any one contributor,
during the year, contributions exclusively for religious, charitable, etc., purposes, but no such contributions totaled more than $1,000. If this box is checked, enter here the total contributions that were received during the year for an exclusively religious, charitable, etc., purpose. Don't complete any of the parts unless the General Rule applies to this organization because it received nonexclusively religious, charitable, etc., contributions totaling $5,000 or more during the year ......... Arrow Bullet

Caution: An organization that isn't covered by the General Rule and/or the Special Rules doesn't file Schedule B (Form 990,
990-EZ, or 990-PF), but it must answer “No” on Part IV, line 2, of its Form 990; or check the box on line H of its Form 990-EZ
or on its Form 990PF, Part I, line 2, to certify that it doesn't meet the filing requirements of Schedule B (Form 990,
990-EZ, or 990-PF).

For Paperwork Reduction Act Notice, see the Instructions
for Form 990, 990-EZ, or 990-PF.

Cat. No. 30613XSchedule B (Form 990, 990-EZ, or 990-PF) (2020)

Schedule B (Form 990, 990-EZ, or 990-PF) (2020) Page 2

Name of organization Castine Scientific Society dba Wilson Museum

Part I Contributors	Contributors (see instructions). Use duplicate copies of Part I if additional space is needed.
(a) No.	(b) Name, address, and ZIP + 4	(c) Total contributions	(d) Type of contribution
RESTRICTED	,	$ RESTRICTED	Person Payroll Noncash (Complete Part II for noncash contributions.)
(a) No.	(b) Name, address, and ZIP + 4	(c) Total contributions	(d) Type of contribution
		$	Person Payroll Noncash (Complete Part II for noncash contributions.)
(a) No.	(b) Name, address, and ZIP + 4	(c) Total contributions	(d) Type of contribution
		$	Person Payroll Noncash (Complete Part II for noncash contributions.)
(a) No.	(b) Name, address, and ZIP + 4	(c) Total contributions	(d) Type of contribution
		$	Person Payroll Noncash (Complete Part II for noncash contributions.)
(a) No.	(b) Name, address, and ZIP + 4	(c) Total contributions	(d) Type of contribution
		$	Person Payroll Noncash (Complete Part II for noncash contributions.)
(a) No.	(b) Name, address, and ZIP + 4	(c) Total contributions	(d) Type of contribution
		$	Person Payroll Noncash (Complete Part II for noncash contributions.)
Schedule B (Form 990, 990-EZ, or 990-PF) (2020)

Schedule B (Form 990, 990-EZ, or 990-PF) (2020)

Page 3

Name of organization Castine Scientific Society dba Wilson Museum		Employer identification number 23-7059689

Part II	Noncash Property (see instructions). Use duplicate copies of Part II if additional space is needed.
(a) No. from Part I	(b) Description of noncash property given	(c) FMV (or estimate) (See instructions)	(d) Date received
		$
(a) No. from Part I	(b) Description of noncash property given	(c) FMV (or estimate) (See instructions)	(d) Date received
		$
(a) No. from Part I	(b) Description of noncash property given	(c) FMV (or estimate) (See instructions)	(d) Date received
		$
(a) No. from Part I	(b) Description of noncash property given	(c) FMV (or estimate) (See instructions)	(d) Date received
		$
(a) No. from Part I	(b) Description of noncash property given	(c) FMV (or estimate) (See instructions)	(d) Date received
		$
(a) No. from Part I	(b) Description of noncash property given	(c) FMV (or estimate) (See instructions)	(d) Date received
		$
Schedule B (Form 990, 990-EZ, or 990-PF) (2020)

Schedule B (Form 990, 990-EZ, or 990-PF) (2020)

Page 4


Name of organization Castine Scientific Society dba Wilson Museum			Employer identification number 23-7059689
Part III Exclusively religious, charitable, etc., contributions to organizations described in section 501(c)(7), (8), or (10) that total more than $1,000 for the year from any one contributor. Complete columns (a) through (e) and the following line entry. For organizations completing Part III, enter the total of exclusively religious, charitable, etc., contributions of $1,000 or less for the year. (Enter this information once. See instructions.) $ Use duplicate copies of Part III if additional space is needed.

(a)
No. from Part I

(b) Purpose of gift

(d) Description of how gift is held

(e) Transfer of gift
Transferee's name, address, and ZIP 4	Relationship of transferor to transferee

(a)
No. from Part I

(b) Purpose of gift

(d) Description of how gift is held

(e) Transfer of gift
Transferee's name, address, and ZIP 4	Relationship of transferor to transferee

(a)
No. from Part I

(b) Purpose of gift

(d) Description of how gift is held

(e) Transfer of gift
Transferee's name, address, and ZIP 4	Relationship of transferor to transferee

(a)
No. from Part I

(b) Purpose of gift

(d) Description of how gift is held

(e) Transfer of gift
Transferee's name, address, and ZIP 4	Relationship of transferor to transferee

Schedule B (Form 990, 990-EZ, or 990-PF) (2020)

Additional Data

Software ID:	20011551
Software Version:	2020v4.0

- TIN:

SCHEDULE D
(Form 990)

Department of the Treasury
Internal Revenue Service

Supplemental Financial Statements

Complete if the organization answered "Yes," on Form 990,
Part IV, line 6, 7, 8, 9, 10, 11a, 11b, 11c, 11d, 11e, 11f, 12a, or 12b.
SchDMd Bullet

Attach to Form 990.
SchDMd Bullet

Go to www.irs.gov/Form990 for instructions and the latest information.

OMB No. 1545-0047

2020

Open to Public Inspection

Name of the organization

Castine Scientific Society
dba Wilson Museum

Employer identification number

23-7059689

Part I

Organizations Maintaining Donor Advised Funds or Other Similar Funds or Accounts. Complete if the organization answered "Yes" on Form 990, Part IV, line 6.

		(a) Donor advised funds	(b) Funds and other accounts
1	Total number at end of year .........
2	Aggregate value of contributions to (during year)
3	Aggregate value of grants from (during year)
4	Aggregate value at end of year ........

Did the organization inform all donors and donor advisors in writing that the assets held in donor advised funds are the organization’s property, subject to the organization’s exclusive legal control? ............

Yes No

Did the organization inform all grantees, donors, and donor advisors in writing that grant funds can be used only for charitable purposes and not for the benefit of the donor or donor advisor, or for any other purpose conferring impermissible private benefit? ...................................

Yes No

Part II

Conservation Easements.
Complete if the organization answered "Yes" on Form 990, Part IV, line 7.

Purpose(s) of conservation easements held by the organization (check all that apply).

Preservation of land for public use (e.g., recreation or education) Preservation of an historically important land area

Protection of natural habitat Preservation of a certified historic structure

Preservation of open space

Complete lines 2a through 2d if the organization held a qualified conservation contribution in the form of a conservation easement on the last day of the tax year.

			Held at the End of the Year
a	Total number of conservation easements ......................	2a	1
b	Total acreage restricted by conservation easements ....................	2b	30
c	Number of conservation easements on a certified historic structure included in (a) .....	2c
d	Number of conservation easements included in (c) acquired after 7/25/06, and not on a historic structure listed in the National Register ...	2d

Number of conservation easements modified, transferred, released, extinguished, or terminated by the organization during the
tax year SchDMd Bullet

Number of states where property subject to conservation easement is located SchDMd Bullet

Does the organization have a written policy regarding the periodic monitoring, inspection, handling of violations, and enforcement of the conservation easements it holds? ............

Yes No

Staff and volunteer hours devoted to monitoring, inspecting, handling of violations, and enforcing conservation easements during the year
SchDMd Bullet

Amount of expenses incurred in monitoring, inspecting, handling of violations, and enforcing conservation easements during the year
SchDMd Bullet

Does each conservation easement reported on line 2(d) above satisfy the requirements of section 170(h)(4)(B)(i) and section 170(h)(4)(B)(ii)? .............................

Yes No

In Part XIII, describe how the organization reports conservation easements in its revenue and expense statement, and
balance sheet, and include, if applicable, the text of the footnote to the organization’s financial statements that describes
the organization’s accounting for conservation easements.

Part III

Organizations Maintaining Collections of Art, Historical Treasures, or Other Similar Assets.
Complete if the organization answered "Yes" on Form 990, Part IV, line 8.

If the organization elected, as permitted under FASB ASC 958, not to report in its revenue statement and balance sheet works of art, historical treasures, or other similar assets held for public exhibition, education, or research in furtherance of public service, provide, in Part XIII, the text of the footnote to its financial statements that describes these items.

If the organization elected, as permitted under FASB ASC 958, to report in its revenue statement and balance sheet works of art, historical treasures, or other similar assets held for public exhibition, education, or research in furtherance of public service, provide the following amounts relating to these items:

(i)

Revenue included on Form 990, Part VIII, line 1 ......................... SchDMd Bullet

(ii)

Assets included in Form 990, Part X ............................... SchDMd Bullet

If the organization received or held works of art, historical treasures, or other similar assets for financial gain, provide the
following amounts required to be reported under FASB ASC 958 relating to these items:

Revenue included on Form 990, Part VIII, line 1 .......................... SchDMd Bullet

Assets included in Form 990, Part X ............................... SchDMd Bullet

For Paperwork Reduction Act Notice, see the Instructions for Form 990.

Cat. No. 52283D

Schedule D (Form 990) 2020

Page 2

Part III

Organizations Maintaining Collections of Art, Historical Treasures, or Other Similar Assets (continued)

Using the organization’s acquisition, accession, and other records, check any of the following that are a significant use of its collection items (check all that apply):

Public exhibition

Loan or exchange programs

Scholarly research

Other

Preservation for future generations

Provide a description of the organization’s collections and explain how they further the organization’s exempt purpose in
Part XIII.

During the year, did the organization solicit or receive donations of art, historical treasures or other similar
assets to be sold to raise funds rather than to be maintained as part of the organization’s collection?...

Yes No

Part IV

Escrow and Custodial Arrangements. Complete if the organization answered "Yes" on Form 990, Part IV, line 9, or reported an amount on Form 990, Part X, line 21.

Is the organization an agent, trustee, custodian or other intermediary for contributions or other assets not
included on Form 990, Part X? ....................................

Yes No


b	If "Yes," explain the arrangement in Part XIII and complete the following table:		Amount
c	Beginning balance .............................	1c
d	Additions during the year ............................	1d
e	Distributions during the year ..........................	1e
f	Ending balance ................................	1f

Did the organization include an amount on Form 990, Part X, line 21, for escrow or custodial account liability? ...

Yes No

If "Yes," explain the arrangement in Part XIII. Check here if the explanation has been provided in Part XIII ....

Part V

Endowment Funds.
Complete if the organization answered "Yes" on Form 990, Part IV, line 10.

		(a) Current year	(b) Prior year	(c) Two years back	(d) Three years back	(e) Four years back

1a	Beginning of year balance ....	15,943,041	13,791,305	14,929,667	13,397,549	12,805,985
b	Contributions ...	65,535
c	Net investment earnings, gains, and losses	1,072,038	2,751,196	-541,928	2,041,265	1,055,922
d	Grants or scholarships ...
e	Other expenditures for facilities and programs ...	492,659	486,097	483,466	401,163	366,992
f	Administrative expenses ....	115,569	113,363	112,968	107,984	97,366
g	End of year balance ......	16,472,386	15,943,041	13,791,305	14,929,667	13,397,549

Provide the estimated percentage of the current year end balance (line 1g, column (a)) held as:

Board designated or quasi-endowment SchDMd Bullet

100.000 %

Permanent endowment SchDMd Bullet

Term endowment SchDMd Bullet

The percentages on lines 2a, 2b, and 2c should equal 100%.

Are there endowment funds not in the possession of the organization that are held and administered for the
organization by:

Yes

(i) Unrelated organizations .......................

3a(i)

Yes

(ii) Related organizations .......................

3a(ii)

If "Yes" on 3a(ii), are the related organizations listed as required on Schedule R? .........

Describe in Part XIII the intended uses of the organization's endowment funds.

Part VI

Land, Buildings, and Equipment.
Complete if the organization answered "Yes" on Form 990, Part IV, line 11a. See Form 990, Part X, line 10.

Description of property		(a) Cost or other basis (investment)	(b) Cost or other basis (other)	(c) Accumulated depreciation	(d) Book value

1a	Land .....	2,124,096		2,124,096
b	Buildings ....	1,670,438	631,932	1,038,506
c	Leasehold improvements
d	Equipment ....	141,863	122,061	19,802
e	Other .....
Total. Add lines 1a through 1e. (Column (d) must equal Form 990, Part X, column (B), line 10(c).)..				3,182,404

Schedule D (Form 990) 2020

Page 3

Part VII

Investments - Other Securities.
Complete if the organization answered "Yes" on Form 990, Part IV, line 11b. See Form 990, Part X, line 12.

(a) Description of security or category (including name of security)	(b) Book value	(c) Method of valuation: Cost or end-of-year market value
(1) Financial derivatives.........
(2) Closely-held equity interests........
(3)Other
(B)
(C)
(D)
(E)
(F)
(G)
(H)
(I)
Total. (Column (b) must equal Form 990, Part X, col. (B) line 12.)

Part VIII

Investments - Program Related. Complete if the organization answered 'Yes' on Form 990, Part IV, line 11c. See Form 990, Part X, line 13.

(a) Description of investment	(b) Book value	(c) Method of valuation: Cost or end-of-year market value

(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
Total. (Column (b) must equal Form 990, Part X, col.(B) line 13.)

Part IX

Other Assets.
Complete if the organization answered 'Yes' on Form 990, Part IV, line 11d. See Form 990, Part X, line 15.

(a) Description				(b) Book value

(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
Total. (Column (b) must equal Form 990, Part X, col.(B) line 15.)...........

Part X

Other Liabilities.
Complete if the organization answered 'Yes' on Form 990, Part IV, line 11e or 11f. See Form 990, Part X, line 25.

1.(a) Description of liability	(b) Book value
(1) Federal income taxes

(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Total. (Column (b) must equal Form 990, Part X, col.(B) line 25.)
2. Liability for uncertain tax positions. In Part XIII, provide the text of the footnote to the organization's financial statements that reports the organization's liability for uncertain tax positions under FIN 48 (ASC 740). Check here if the text of the footnote has been provided in Part XIII

Schedule D (Form 990) 2020

Page 4

Part XI Reconciliation of Revenue per Audited Financial Statements With Revenue per Return. Complete if the organization answered 'Yes' on Form 990, Part IV, line 12a.
1	Total revenue, gains, and other support per audited financial statements .......		1
2	Amounts included on line 1 but not on Form 990, Part VIII, line 12:
a	Net unrealized gains (losses) on investments ....	2a
b	Donated services and use of facilities .........	2b
c	Recoveries of prior year grants ...........	2c
d	Other (Describe in Part XIII.) ............	2d
e	Add lines 2a through 2d .....................		2e
3	Subtract line 2e from line 1..................		3
4	Amounts included on Form 990, Part VIII, line 12, but not on line 1:
a	Investment expenses not included on Form 990, Part VIII, line 7b .	4a
b	Other (Describe in Part XIII.) ...........	4b
c	Add lines 4a and 4b....................		4c
5	Total revenue. Add lines 3 and 4c. (This must equal Form 990, Part I, line 12.) ......		5

Part XII Reconciliation of Expenses per Audited Financial Statements With Expenses per Return. Complete if the organization answered 'Yes' on Form 990, Part IV, line 12a.
1	Total expenses and losses per audited financial statements ...........		1
2	Amounts included on line 1 but not on Form 990, Part IX, line 25:
a	Donated services and use of facilities .........	2a
b	Prior year adjustments ............	2b
c	Other losses ................	2c
d	Other (Describe in Part XIII.) ............	2d
e	Add lines 2a through 2d....................		2e
3	Subtract line 2e from line 1...................		3
4	Amounts included on Form 990, Part IX, line 25, but not on line 1:
a	Investment expenses not included on Form 990, Part VIII, line 7b ..	4a
b	Other (Describe in Part XIII.) ............	4b
c	Add lines 4a and 4b.....................		4c
5	Total expenses. Add lines 3 and 4c. (This must equal Form 990, Part I, line 18.) ......		5

Part XIII

Supplemental Information

Provide the descriptions required for Part II, lines 3, 5, and 9; Part III, lines 1a and 4; Part lV, lines 1b and 2b; Part V, line 4; Part X, line 2; Part XI, lines 2d and 4b; and Part XII, lines 2d and 4b. Also complete this part to provide any additional information.

Return Reference	Explanation
Part II, Line 5: Summarized Policy	The Organization has a brief list of what to look for and to report on each year when the island is visited. Any changes to the land and buildings that have occurred since the last inspection will be noted and addressed appropriately. The Organization does not currently have a specific policy for handling any violations. However, any violations would be addressed with the property owner with the expectation that any findings would be immediately remedied.During 2020, four staff/volunteers performed the inspection and spent approximately two hours getting to the island, performing the inspection and returning to the main land. Overall six total hours were spent monitoring the conservation easement.
Part II, Line 9: Organization Reporting of conservation easements.	Castine Scientific Society is the holder of a conservation easement pertaining to Nautilus Island, a thirty acre island situated in Castine Harbor in east Penobscot Bay. The Organization was granted the easement by the Estate of Ellenore Doudiet on May 11, 2006. The primary purpose of the easement is to provide significant public benefit by protecting and preserving Nautilus Island in perpetuity in its substantially natural and undeveloped condition and to protect the natural habitat of the island. Castine Scientific Society, its successors and assigns are granted certain affirmative rights including access to the property for inspection, monitoring, and enforcement of the terms of the conservation easement. As the holder of the conservation easement, Castine Scientific Society has not assigned any value or reported the easement in its statement of financial position or statement of activities.
Part III, Line 1a: If organization elected under SFAS 116 to not report are, historical treasures, o	The collections are maintained for public exhibition, education, and research in furtherance of public service, rather than for financial gain. Collection items include prehistoric artifacts from around the world, ship models, weapons, ceramics, rocks and minerals, tools, and other farm and home equipment. In addition, the collection includes letters, diaries, ship logs, business papers, and maps. The Organization oversees the maintenance and preservation of all collection items with the presumption of permanence, care, documentation, and accessibility.In conformity with accounting policies generally followed by museums, the value of the Organization's collections are excluded from the statement of financial position and gifts of collection items are excluded from revenue in the statement of activities. During 2020, six contributions consisting of historical artifacts, archival books, photos, and documents were donated to the collection. Purchases of collection items, if any, are recorded separately in the statement of activities as a decrease in net assets. One first edition book by Noah Brooks was purchased for the collection in 2020.It is the Organization's policy to describe any items given away, damaged, destroyed, lost, or otherwise de-accessed during the period. In addition, any funds realized from the sale of materials or objects deaccessioned from collections are applied to the purchase of additions to the collection or for conservation of the collections of the Organization. During 2020, no artifacts were removed from the collection.
Part III, Line 4: Description of organization's collections and how it furthers its purpose.	The Wilson Museum exhibits, interprets, and makes available for research its collections to stimulate visitors into the exploration of natural history and cultures of the Penobscot Bay region of Maine and the world, which is the organization's mission. The heart of the Wilson Museum is the collections of physical objects and materials, and therefore, most activities revolve around their protection, interpretation, and proper use. These collections are grouped in several categories, all designed for furthering the Museum's mission. The permanent collection is the main collection of: "cultural" objects (archaeological, ethnographic, and contemporary); historic and local objects (tools and utensils, textiles, amusements, furniture, weapons, a pre-revolutionary house, archival materials, etc.); Other supporting collections include: an education collection of objects intended for handling and use in educational programs; exhibition collections which include objects used to add exhibition context; research collections which include specimens and samples that can be analyzed for research or used as reference specimens; and a lending library collection which are duplicates of archival collections for lending to staff, volunteers or visitors. The Board of Trustees has a fiduciary duty to steward the Museum's collections.
Part V, Line 4: Intended uses of the endowment fund.	The intended use of the Endowment Fund is to provide the Organization with predictable and growing investment income and appreciation of principal through the prudent selection of quality investments. Specific objectives include offsetting the effects of inflation, protecting principal and providing the Organization with discretionary income necessary to help offset operating expenses while increasing the base value of the underlying endowment. Funds are distributed from the Endowment to support annual operations of the Organization based on recommendations by the Finance Committee. In addition, the Board of Trustees established a quasi-endowment in 2020 for the support of an intern program.

Schedule D (Form 990) 2020

Additional Data

Software ID:	20011551
Software Version:	2020v4.0

- TIN:

Schedule L
(Form 990 or 990-EZ)

Department of the Treasury
Internal Revenue Service

Transactions with Interested Persons

Complete if the organization answered "Yes" on Form 990, Part IV, lines 25a, 25b, 26, 27, 28a, 28b, or 28c, or Form 990-EZ, Part V, line 38a or 40b.
MediumBullet

Attach to Form 990 or Form 990-EZ.
MediumBullet

Go to www.irs.gov/Form990 for instructions and the latest information.

OMB No. 1545-0047

2020

Open to Public Inspection

Name of the organization

Castine Scientific Society
dba Wilson Museum

Employer identification number

23-7059689

Part I

Excess Benefit Transactions (section 501(c)(3), section 501(c)(4), and section 501(c)(29) organizations only).
Complete if the organization answered "Yes" on Form 990, Part IV, line 25a or 25b, or Form 990-EZ, Part V, line 40b.

1(a) Name of disqualified person	(c) Description of transaction	(d) Corrected?
1(a) Name of disqualified person	(c) Description of transaction	Yes	No

Enter the amount of tax incurred by the organization managers or disqualified persons during the year under section 4958. ........................... Bullet Image

Enter the amount of tax, if any, on line 2, above, reimbursed by the organization ........ Bullet Image

Part II

Loans to and/or From Interested Persons.
Complete if the organization answered "Yes" on Form 990-EZ, Part V, line 38a, or Form 990, Part IV, line 26; or if the organization reported an amount on Form 990, Part X, line 5, 6, or 22

(a) Name of interested person	(b) Relationship with organization	(c) Purpose of loan	(d) Loan to or from the organization?		(e) Original principal amount	(f) Balance due	(g) In default?		(h) Approved by board or committee?		(i) Written agreement?
(a) Name of interested person	(b) Relationship with organization	(c) Purpose of loan	To	From	(e) Original principal amount	(f) Balance due	Yes	No	Yes	No	Yes	No






Total ............... $

Part III

Grants or Assistance Benefiting Interested Persons.
Complete if the organization answered "Yes" on Form 990, Part IV, line 27.

(a) Name of interested person	(b) Relationship between interested person and the organization	(c) Amount of assistance	(d) Type of assistance	(e) Purpose of assistance

For Paperwork Reduction Act Notice, see the Instructions for Form 990 or 990-EZ.

Cat. No. 50056A

Schedule L (Form 990 or 990-EZ) 2020

Page 2

Part IV

Business Transactions Involving Interested Persons.
Complete if the organization answered "Yes" on Form 990, Part IV, line 28a, 28b, or 28c.

(a) Name of interested person	(b) Relationship between interested person and the organization	(c) Amount of transaction	(d) Description of transaction	(e) Sharing of organization's revenues?
(a) Name of interested person		(c) Amount of transaction	(d) Description of transaction	Yes	No
(1) Sherman Hutchins	E. Dir spouse	575	Wages - Consulting		No
(2) Temple Blackwood	Trustee	2,755	Woodturning/work		No
(3) Jesse Morehouse	'ee spouse	4,607	'ee & reimb for supplies		No
(4) Ellenore Tarr	E.Dir-Grandchild	3,294	Wages & Reimb		No
(5) David Tarr	E. Dir in-law	240	Food		No
(6) Sebastian Blackwood	Trustee relation	3,120	Wages		No
(7) Rosemary Wyman	Trustee spouse	585	Artwork Museum Store		No

Part V

Supplemental Information
Provide additional information for responses to questions on Schedule L (see instructions).

Return Reference	Explanation

Schedule L (Form 990 or 990-EZ) 2020

Additional Data

Software ID:	20011551
Software Version:	2020v4.0

- TIN:

SCHEDULE M
(Form 990)

Department of the Treasury

Internal Revenue Service

Noncash Contributions

Complete if the organizations answered "Yes" on Form 990, Part IV, lines 29 or 30.
Right pointing arrow large image

Attach to Form 990.
Right pointing arrow large image

Go to www.irs.gov/Form990 for the latest information.

OMB No. 1545-0047

2020

Open to Public Inspection

Name of the organization

Castine Scientific Society
dba Wilson Museum

Employer identification number

23-7059689

Part I

Types of Property

	(a) Check if applicable	(b) Number of contributions or items contributed	(c) Noncash contribution amounts reported on Form 990, Part VIII, line 1g	(d) Method of determining noncash contribution amounts
1 Art—Works of art ....
2 Art—Historical treasures .
3 Art—Fractional interests ..
4 Books and publications ..	X		43	Wholesale Val
5 Clothing and household goods .......
6 Cars and other vehicles ..
7 Boats and planes ....
8 Intellectual property ...
9 Securities—Publicly traded .
10 Securities—Closely held stock .
11 Securities—Partnership, LLC, or trust interests ....
12 Securities—Miscellaneous ..
13 Qualified conservation contribution—Historic structures .....
14 Qualified conservation contribution—Other ...
15 Real estate—Residential .
16 Real estate—Commercial ..
17 Real estate—Other ...
18 Collectibles .....
19 Food inventory ...
20 Drugs and medical supplies .
21 Taxidermy ......
22 Historical artifacts ....	X	1		See Part II
23 Scientific specimens ..
24 Archeological artifacts ...
25 Other ( Foreign Coins )	X	15	1	FMV
26 Other ( Fake Coinage )	X	9	1	FMV
27 Other ( Metal Objects )	X	85	43	FMV
28 Other ( Cowrie Shells )	X	685	103	FMV
Other ( Whelk Egg Case )	X	3	24	FMV
Other ( Horseshoe Crab )	X	1	10	FMV

Number of Forms 8283 received by the organization during the tax year for contributions
for which the organization completed Form 8283, Part IV, Donee Acknowledgement

Yes

30a

During the year, did the organization receive by contribution any property reported in Part I, lines 1 through 28, that it must hold for at least three years from the date of the initial contribution, and which isn't required to be used for exempt purposes for the entire holding period? ...................

30a

If "Yes," describe the arrangement in Part II.

Does the organization have a gift acceptance policy that requires the review of any nonstandard contributions?

Yes

32a

Does the organization hire or use third parties or related organizations to solicit, process, or sell noncash

contributions? ..........................

32a

If "Yes," describe in Part II.

If the organization didn't report an amount in column (c) for a type of property for which column (a) is checked,

describe in Part II.

For Paperwork Reduction Act Notice, see the Instructions for Form 990.

Cat. No. 51227J

Schedule M (Form 990) (2020)

Page 2

Part IISupplemental Information. Provide the information required by Part I, lines 30b, 32b, and 33, and whether the organization is reporting in Part I, column (b), the number of contributions, the number of items received, or a combination of both. Also complete this part for any additional information.

Return Reference	Explanation
Part I, Line 33, Revenues Not Reported	Historical artifacts received by the Museum are not capitalized or treated as financial assets. Collections are held for public exhibition, or research in furtherance of public service rather than for financial gain; are protected, kept unencumbered, cared for and presented.

Schedule M (Form 990) (2020)

Additional Data

Software ID:	20011551
Software Version:	2020v4.0

- TIN:

SCHEDULE O
(Form 990 or 990-EZ)

Department of the Treasury
Internal Revenue Service

Supplemental Information to Form 990 or 990-EZ

Complete to provide information for responses to specific questions on
Form 990 or 990-EZ or to provide any additional information.
MediumBullet

Attach to Form 990 or 990-EZ.
MediumBullet

Go to www.irs.gov/Form990 for the latest information.

OMB No. 1545-0047

2020

Open to Public
Inspection

Name of the organization

Castine Scientific Society
dba Wilson Museum

Employer identification number

23-7059689

Return Reference	Explanation
Form 990, Part III, Line 4d: Other Program Services Description	OTHER PROGRAM SERVICES 4: Other Program Services - outreach to area schools and community organizations. Approximately 150 persons impacted.
Form 990, Part VI, Line 6: Explanation of Classes of Members or Shareholder	The voting membership of the Wilson Museum consists of the Board of Trustees. The non-voting membership of the Wilson Museum consists of General Members. These are one-year dues paying individual members, family members, student members;and one-time dues paying life members. General Members have no voting rights.
Form 990, Part VI, Line 11b: Form 990 Review Process	The Form 990 is provided to the Executive Committee by the paid preparer. The 990 is passed to all Trustees in the Finance Committee within seven days. The President sends a recommendation to all Trustees who are to respond within four days; if response is not to file as presented, the paid preparer will be asked to file an extension; otherwise, the 990 will be filed as presented.
Form 990, Part VI, Line 12c: Explanation of Monitoring and Enforcement of Conflicts	In order to monitor the Wilson Museum's Conflict of Interest Policy, covered persons will annually disclose (in writing) any conflicts or potential conflicts of interest as well as review the Policy and sign an acknowledgment statement. Procedures for identifying and addressing conflicts of interest and violations to the Policy are outlined in detail within the Conflict of Interest Policy adopted by the Board of Trustees on September 22, 2009 and may include disciplinary and/or corrective actions.
Form 990, Part VI, Line 15a: Compensation Review & Approval Process - CEO, Top Management	If a new Executive Director were to be hired, compensation would be set by the Board of Trustees after a review of compensation levels at other Maine non-profit organizations with comparable budgets and programs. The review would serve as guidance to the Board, but not be the only determinant of compensation level.Any future adjustments in compensation may be made by the Board as it sees fit. Normally, this will occur through the annual budget process.The Board may consider increases in compensation as cost of living adjustments, as the result of organizational growth, and/or to reward exceptional job performance. The Board may also consider decreases in compensation, depending on the fiscal health of the organization and/or job performance. Before making any compensation adjustments in excess of 5% (up or down), the Board shall once again review compensation levels at other Maine non-profit organizations to guide its decisions.
Form 990, Part VI, Line 15b: Compensation Review and Approval Process for Officers and Key Employees	If a new Executive Director were to be hired, compensation would be set by the Board of Trustees after a review of compensation levels at other Maine non-profit organizations with comparable budgets and programs. The review would serve as guidance to the Board, but not be the only determinant of compensation level.Any future adjustments in compensation may be made by the Board as it sees fit. Normally, this will occur through the annual budget process.The Board may consider increases in compensation as cost of living adjustments, as the result of organizational growth, and/or to reward exceptional job performance. The Board may also consider decreases in compensation, depending on the fiscal health of the organization and/or job performance. Before making any compensation adjustments in excess of 5% (up or down), the Board shall once again review compensation levels at other Maine non-profit organizations to guide its decisions.
Form 990, Part VI, Line 19: Other Organization Documents Publicly Available	The Wilson Museum makes its governing documents, policies and financial statements, including its Form 990 available for public inspection by keeping a copy on file in the Museum's office which may be viewed upon request. Form 990 is also available on-line through Candid.org (formerly Guide Star and Foundation Center).
Other Changes In Net Assets Or Fund Balances - Other Decreases	Donated Services - Programs = -$0
Other Changes In Net Assets Or Fund Balances - Other Decreases	Rounding = -$1

For Paperwork Reduction Act Notice, see the Instructions for Form 990 or 990-EZ.

Cat. No. 51056K

Schedule O (Form 990 or 990-EZ) 2020

Additional Data

Software ID:	20011551
Software Version:	2020v4.0

		Prior Year	Current Year
8	Contributions and grants (Part VIII, line 1h) .........	50,167	97,293
9	Program service revenue (Part VIII, line 2g) .........	2,239	350
10	Investment income (Part VIII, column (A), lines 3, 4, and 7d ) ....	622,864	2,049,977
11	Other revenue (Part VIII, column (A), lines 5, 6d, 8c, 9c, 10c, and 11e)	4,217	-12,352
12	Total revenue—add lines 8 through 11 (must equal Part VIII, column (A), line 12)	679,487	2,135,268
13	Grants and similar amounts paid (Part IX, column (A), lines 1–3 )...	7,600	5,000
14	Benefits paid to or for members (Part IX, column (A), line 4).....		0
15	Salaries, other compensation, employee benefits (Part IX, column (A), lines 5–10)	312,217	277,451
16a	Professional fundraising fees (Part IX, column (A), line 11e) .....		0
b	Total fundraising expenses (Part IX, column (D), line 25) 7,792
17	Other expenses (Part IX, column (A), lines 11a–11d, 11f–24e)....	335,128	297,672
18	Total expenses. Add lines 13–17 (must equal Part IX, column (A), line 25)	654,945	580,123
19	Revenue less expenses. Subtract line 18 from line 12.......	24,542	1,555,145
		Beginning of Current Year	End of Year
20	Total assets (Part X, line 16).............	19,305,599	19,868,188
21	Total liabilities (Part X, line 26).............	10,534	8,714
22	Net assets or fund balances. Subtract line 21 from line 20.....	19,295,065	19,859,474

Sign Here

	Signature of officer	Date

	Type or print name and title


4a	(Code: ) (Expenses $ 164,268 including grants of $ 5,000 ) (Revenue $ 137 )
	Wilson Museum - care, maintenance, administration, and interpretation of a 4,500 square foot museum and worldwide collections from prehistory to the present day, including educational service such as publications, lectures, demonstrations, and website. Open from May 27th to September 30th, groups by appointment during the off-season. Approximate Museum attendance of 2,000.

4b	(Code: ) (Expenses $ 74,668 including grants of $ ) (Revenue $ 157 )
	Education Center & Demonstration/Exhibit Area - care, maintenance, and interpretation of exhibition/demonstration buildings, a fully functional 19th century smithy, and a 3,000 square foot Education Center where educational services such as lectures, demonstrations and exhibits are offered on a year-round basis. Approximate Education Center & Demonstration Exhibit area attendance of 1,000.

4c	(Code: ) (Expenses $ 44,801 including grants of $ ) (Revenue $ 56 )
	John & Phebe Perkins House, Perkins Gallery & Museum Store - care, maintenance, and interpretation of exhibition, Museum Store and a 2 1/2 story colonial home, built in 1763/83 which is on the National Register of Historic Places, as well as the care of the collections within, including family heirlooms, local artifacts, and period pieces. Historic home open July and August and by appointment with guided tours and demonstrations such as fireside cooking. Gallery & Museum Store open May 27th to September 30th, groups by appointment during the off-season. Approximate Perkins House, Gallery & Museum Store attendance 750.

4d	Other program services (Describe in Schedule O.)
	(Expenses $ 14,934 including grants of $ ) (Revenue $ )
4e	Total program service expenses298,671

1b	Sub-Total................
c	Total from continuation sheets to Part VII, Section A....
d	Total (add lines 1b and 1c)...........	66,907

(A) Name and business address	(B) Description of services	(C) Compensation





2 Total number of independent contractors (including but not limited to those listed above) who received more than $100,000 of compensation from the organization 0

1	Briefly describe the organization’s mission or most significant activities: Building on the legacy of its founding family, the Wilson Museum uses its diverse collections and resources to provide learning experiences to stimulate exploration of the natural history and cultures of the Penobscot Bay region and the world.
2	Check this box
3	Number of voting members of the governing body (Part VI, line 1a) ........	3	11
4	Number of independent voting members of the governing body (Part VI, line 1b) .....	4	11
5	Total number of individuals employed in calendar year 2020 (Part V, line 2a) ......	5	14
6	Total number of volunteers (estimate if necessary) .............	6	20
7a	Total unrelated business revenue from Part VIII, column (C), line 12 ........	7a	0
b	Net unrelated business taxable income from Form 990-T, line 39 .........	7b

1a	Federated campaigns..		1a
b	Membership dues..		1b	4,410
c	Fundraising events..		1c	200
d	Related organizations		1d
e	Government grants (contributions)		1e

f	All other contributions, gifts, grants, and similar amounts not included above		1f	92,683

g	Noncash contributions included in lines 1a - 1f:$		1g	225

h Total. Add lines 1a-1f.......		97,293

		Business Code
2a	General Admissions	712110	350	350
b	Other Program Fees	712110
c	Perkins House Admission	712120
d
e
f	All other program service revenue.
g	Total. Add lines 2a–2f .....		350

3 Investment income (including dividends, interest, and othersimilar amounts) ......			329,422			329,422
4 Income from investment of tax-exempt bond proceeds			0
5 Royalties...........			0
		(ii) Personal	(i) Real
6a	Gross rents		200	6a
b	Less: rental expenses			6b
c	Rental income or (loss)		200	6c
d	Net rental income or (loss).......			200			200
		(ii) Other	(i) Securities
7a	Gross amount from sales of assets other than inventory		15,086,570	7a
b	Less: cost or other basis and sales expenses		13,366,015	7b
c	Gain or (loss)		1,720,555	7c
d	Net gain or (loss).........			1,720,555			1,720,555
8a	Gross income from fundraising events (not including $ 200of contributions reported on line 1c). See Part IV, line 18 ....
			8a	5,001
b	Less: direct expenses ...		8b
c	Net income or (loss) from fundraising events..			5,001
9a	Gross income from gaming activities. See Part IV, line 19 ...
			9a
b	Less: direct expenses ...		9b
c	Net income or (loss) from gaming activities..			0
10a	Gross sales of inventory, less returns and allowances ..
			10a	2,198
b	Less: cost of goods sold ..		10b	2,567
c	Net income or (loss) from sales of inventory..			-369			-369
Business Code			Miscellaneous Revenue
11a	Miscellaneous Income		900099	400	400
b	Removal of Overstock Books		900099	-17,584	-17,584
c
d	All other revenue ....
e	Total. Add lines 11a–11d ......			-17,184
12	Total revenue. See instructions.....			2,135,268	-16,834		2,049,808

1	Grants and other assistance to domestic organizations and domestic governments. See Part IV, line 21 ....	5,000	5,000
2	Grants and other assistance to domestic individuals. See Part IV, line 22 ...........	0
3	Grants and other assistance to foreign organizations, foreign governments, and foreign individuals. See Part IV, lines 15 and 16. .............	0
4	Benefits paid to or for members .......	0
5	Compensation of current officers, directors, trustees, and key employees ...........	66,907	36,691	27,842	2,374
6	Compensation not included above, to disqualified persons (as defined under section 4958(f)(1)) and persons described in section 4958(c)(3)(B) .........	0
7	Other salaries and wages........	162,451	85,838	73,761	2,852
8	Pension plan accruals and contributions (include section 401(k) and 403(b) employer contributions) ....	0
9	Other employee benefits .......	28,695	15,496	12,626	573
10	Payroll taxes ...........	19,398	10,520	8,191	687
11	Fees for services (non-employees):
a	Management ......	0
b	Legal .........	1,124	140	984
c	Accounting ...........	12,042		12,042
d	Lobbying ...........	0
e	Professional fundraising services. See Part IV, line 17	0
f	Investment management fees ......	115,569		115,569
g	Other (If line 11g amount exceeds 10% of line 25, column (A) amount, list line 11g expenses on Schedule O)	2,220		2,220
12	Advertising and promotion ....	6,817	6,516	200	101
13	Office expenses .......	10,443	8,667	1,574	202
14	Information technology ......	8,300	8,300
15	Royalties ..	0
16	Occupancy ...........	64,421	60,325	4,027	69
17	Travel ............	0
18	Payments of travel or entertainment expenses for any federal, state, or local public officials .	0
19	Conferences, conventions, and meetings ....	802	802
20	Interest ...........	0
21	Payments to affiliates .......	0
22	Depreciation, depletion, and amortization ..	45,249	44,075	1,010	164
23	Insurance ...	11,968	716	11,226	26
24	Other expenses. Itemize expenses not covered above (List miscellaneous expenses in line 24e. If line 24e amount exceeds 10% of line 25, column (A) amount, list line 24e expenses on Schedule O.)
a	Program Costs	9,377	9,377
b	Leadership Transition	3,615	1,957	1,658
c	Printing and Publications	2,851	2,387	26	438
d	Collections Management	2,260	2,260
e	All other expenses	614	-396	704	306
25	Total functional expenses. Add lines 1 through 24e	580,123	298,671	273,660	7,792
26	Joint costs. Complete this line only if the organization reported in column (B) joint costs from a combined educational campaign and fundraising solicitation. Check here if following SOP 98-2 (ASC 958-720).

1	Cash–non-interest-bearing ........				1	0
2	Savings and temporary cash investments .........			1,178,923	2	1,317,151
3	Pledges and grants receivable, net ......				3	0
4	Accounts receivable, net .............				4	0
5	Loans and other receivables from any current or former officer, director, trustee, key employee, creator or founder, substantial contributor, or 35% controlled entity or family member of any of these persons .......
					5	0
6	Loans and other receivables from other disqualified persons (as defined under section 4958(f)(1)), and persons described in section 4958(c)(3)(B) ...
					6	0
7	Notes and loans receivable, net ...........				7	0
8	Inventories for sale or use ............			52,836	8	6,031
9	Prepaid expenses and deferred charges ......			3,293	9	1,728
10a	Land, buildings, and equipment: cost or other basis. Complete Part VI of Schedule D	10a	3,936,397
b	Less: accumulated depreciation	10b	753,993	3,177,169	10c	3,182,404
11	Investments—publicly traded securities .			14,876,449	11	15,327,569
12	Investments—other securities. See Part IV, line 11 .....				12	0
13	Investments—program-related. See Part IV, line 11 ..				13	0
14	Intangible assets ...............				14	0
15	Other assets. See Part IV, line 11 ...........			16,929	15	33,305
16	Total assets. Add lines 1 through 15 (must equal line 33)...			19,305,599	16	19,868,188

17	Accounts payable and accrued expenses .....	10,534	17	8,714
18	Grants payable ...		18
19	Deferred revenue .........		19
20	Tax-exempt bond liabilities .........		20
21	Escrow or custodial account liability. Complete Part IV of Schedule D		21
22	Loans and other payables to any current or former officer, director, trustee, key employee, creator or founder, substantial contributor, or 35% controlled entity or family member of any of these persons .........
			22
23	Secured mortgages and notes payable to unrelated third parties ..		23
24	Unsecured notes and loans payable to unrelated third parties ..		24
25	Other liabilities (including federal income tax, payables to related third parties, and other liabilities not included on lines 17 - 24). Complete Part X of Schedule D		25
26	Total liabilities. Add lines 17 through 25..	10,534	26	8,714

	Organizations that follow FASB ASC 958, check here and complete lines 27, 28, 32, and 33.
27	Net assets without donor restrictions ..........	19,294,025	27	19,858,014
28	Net assets with donor restrictions ...........	1,040	28	1,460
	Organizations that do not follow FASB ASC 958, check here and complete lines 29 through 33.
29	Capital stock or trust principal, or current funds .....		29
30	Paid-in or capital surplus, or land, building or equipment fund ...		30
31	Retained earnings, endowment, accumulated income, or other funds		31
32	Total net assets or fund balances ...........	19,295,065	32	19,859,474
33	Total liabilities and net assets/fund balances ........	19,305,599	33	19,868,188