Civic Intelligence

Fort Macarthur Museum Assoc

EIN 95-4297138 • 501(c)3 • Los Angeles, CA

Profile

Education and historic preservation

323 N Coronado StLos Angeles, CA 90026

www.ftmac.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

18th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)3 • $1M-$5M nonprofits • Source year 2024

Liabilities / Revenue

Score unavailable

No value available

Liabilities-to-revenue requires both liabilities and revenue on the latest valid filing.

Source year 2024

Net Margin

Score unavailable

No value available

Net margin requires both revenue and expenses on the latest valid filing.

Source year 2024

Top Officer Pay

Score unavailable

No value available

No filing with officer rows is available for this organization yet.

Asset Growth

33rd percentile

-1.4%

Faster asset growth than 33% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Revenue Growth

1st percentile

-100%

Faster revenue growth than 1% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets18th percentile

Assets

Down

$2,004,660

Down $27,976 (-1.4%) from 2023

Liabilities

Flat

$0

Flat from 2023

Net Assets

Down

$2,004,660

Down $27,976 (-1.4%) from 2023

Operations
Liabilities / RevenueScore unavailableNet MarginScore unavailable

Revenue

Down

$0

Down $8,497 (-100%) from 2023

Expenses

Up

$27,976

Up $4,521 (+19%) from 2023

Net Income

Down

-$27,976

Down $13,018 (-87%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth33rd percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$3.0M$2.0M$1.0M$0Assets 2010: $44,492Liabilities 2010: $0Net Assets 2010: $44,4922010Assets 2011: $49,233Liabilities 2011: $0Net Assets 2011: $49,2332011Assets 2012: $58,096Liabilities 2012: $0Net Assets 2012: $58,0962012Assets 2013: $68,418Liabilities 2013: $0Net Assets 2013: $68,4182013Assets 2014: $78,435Liabilities 2014: $0Net Assets 2014: $78,4352014Assets 2015: $28,715Liabilities 2015: $0Net Assets 2015: $28,7152015Assets 2016: $118,820Liabilities 2016: $0Net Assets 2016: $118,8202016Assets 2017: $122,720Liabilities 2017: $0Net Assets 2017: $122,7202017Assets 2018: $124,238Liabilities 2018: $0Net Assets 2018: $124,2382018Assets 2019: $45,416Liabilities 2019: $0Net Assets 2019: $45,4162019Assets 2020: $54,056Liabilities 2020: $0Net Assets 2020: $54,0562020Assets 2021: $1,908,465Liabilities 2021: $0Net Assets 2021: $1,908,4652021Assets 2022: $2,032,431Liabilities 2022: $0Net Assets 2022: $2,032,4312022Assets 2023: $2,032,636Liabilities 2023: $0Net Assets 2023: $2,032,6362023Assets 2024: $2,004,660Liabilities 2024: $0Net Assets 2024: $2,004,6602024

Highlighted filing

2024

Assets$2,004,660
Liabilities$0
Net Assets$2,004,660
Open 2024 Filing

Operations Trend

Revenue Growth1st percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$300K$200K$100K$0-$100KRevenue 2010: $94,705Expenses 2010: $100,130Net Income 2010: -$5,4252010Revenue 2011: $96,506Expenses 2011: $91,765Net Income 2011: $4,7412011Revenue 2012: $157,754Expenses 2012: $148,891Net Income 2012: $8,8632012Revenue 2013: $170,909Expenses 2013: $149,017Net Income 2013: $21,8922013Revenue 2014: $173,778Expenses 2014: $163,761Net Income 2014: $10,0172014Revenue 2015: $145,416Expenses 2015: $195,136Net Income 2015: -$49,7202015Revenue 2016: $240,739Expenses 2016: $150,634Net Income 2016: $90,1052016Revenue 2017: $180,539Expenses 2017: $176,639Net Income 2017: $3,9002017Revenue 2018: $206,928Expenses 2018: $205,410Net Income 2018: $1,5182018Revenue 2019: $142,824Expenses 2019: $221,646Net Income 2019: -$78,8222019Revenue 2020: $97,188Expenses 2020: $88,548Net Income 2020: $8,6402020Revenue 2021: $106,761Expenses 2021: $91,752Net Income 2021: $15,0092021Revenue 2022: $223,423Expenses 2022: $99,457Net Income 2022: $123,9662022Revenue 2023: $8,497Expenses 2023: $23,455Net Income 2023: -$14,9582023Revenue 2024: $0Expenses 2024: $27,976Net Income 2024: -$27,9762024

Highlighted filing

2024

Revenue$0
Expenses$27,976
Net Income-$27,976
Open 2024 Filing

Filings

Most recent year

2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.

Open filing
Assets
$2,004,660
Liabilities
$0
Net assets
$2,004,660
Revenue
$0
Expenses
$27,976
Net income
-$27,976
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Facts available. Structured filing facts are available, but richer extracted sections are limited.$2.00$0.00$2.00$0.00$0.03$0.03
2023Detailed filing. Detailed filing data is available for this year.$2.03$0.00$2.03$0.01$0.02$0.01
2022Detailed filing. Detailed filing data is available for this year.$2.03$0.00$2.03$0.22$0.10$0.12
2021Detailed filing. Detailed filing data is available for this year.$1.91$0.00$1.91$0.11$0.09$0.02
2020Detailed filing. Detailed filing data is available for this year.$0.05$0.00$0.05$0.10$0.09$0.01
2019Detailed filing. Detailed filing data is available for this year.$0.05$0.00$0.05$0.14$0.22$0.08
2018Detailed filing. Detailed filing data is available for this year.$0.12$0.00$0.12$0.21$0.21$0.00
2017Detailed filing. Detailed filing data is available for this year.$0.12$0.00$0.12$0.18$0.18$0.00
2016Detailed filing. Detailed filing data is available for this year.$0.12$0.00$0.12$0.24$0.15$0.09
2015Summary only. Only limited summary data is available for this year.$0.03$0.00$0.03$0.15$0.20$0.05
2014Summary only. Only limited summary data is available for this year.$0.08$0.00$0.08$0.17$0.16$0.01
2013Summary only. Only limited summary data is available for this year.$0.07$0.00$0.07$0.17$0.15$0.02
2012Summary only. Only limited summary data is available for this year.$0.06$0.00$0.06$0.16$0.15$0.01
2011Summary only. Only limited summary data is available for this year.$0.05$0.00$0.05$0.10$0.09$0.00
2010Summary only. Only limited summary data is available for this year.$0.04$0.00$0.04$0.09$0.10$0.01
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Nov 11, 2025
Return Version
2024v5.0
Gross Receipts
$0
Mission and Program Overview

Mission

Acquisition, preservation nad maintenance of military atrifacts, equipment and buildings located at fort macarthur in san pedro, california. The site and equipemnt are used to teach the history of u.s. Military purposes and achievements.

Education and historic preservation

Balance Sheet Detail
LineBeginningEndChange
Assets
Cap Stk Tr Prin Current Funds$2,032,636--
Rtn Earn Endowment Incm Other Fnds-$2,004,660-
Savings and Temporary Cash Investments$193,236$165,260▼ $27,976
Total Assets$2,032,636$2,004,660▼ $27,976
Other Assets Total$1,839,400$1,839,400→ $0
Liabilities
Total Liabilities$0$0→ $0
Net Assets / Fund Balance
Total Net Assets Fund Balance$2,032,636$2,004,660▼ $27,976
Total Liabilities and Net Assets / Fund Balance$2,032,636$2,004,660▼ $27,976

Asset Categories

AssetBook ValueDepreciationBasis
Other Assets Org$800--
Compensation and Service Providers
Top Officer PayScore unavailable

Board Members and Trustees

NameTitle
Stephen NelsonPresident
Brown BeezerBoard Member
William CoyeBoarf Member
Joseph CornwellSecretary /
Mark MariscalVice Preside
Revenue and Support

Revenue Composition

Contributions and Grants
$0
Program Service Revenue
$0
Investment Income
$0
Other Revenue
$0
Change in Net Assets
$-27,976
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$27,976
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0
Salaries, Compensation, and Employee Benefits$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Other Expenses$10,660--$10,660
Fees for Services Other$6,056$150-$6,206
Office Expenses$5,649$66-$5,715
Insurance$5,141--$5,141
Conferences and Meetings$254--$254
Total Functional Expenses$27,760$216$0$27,976
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
No
Other officer compensation reviewed
No
Conflict-of-interest policy
No
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Page 6, Part VI, Line 11B

“A pdf copy of tax forms is provided to all members of the governing body by email with request to offer and comments or questions about the forms and the data reflected therein prior to the filing of the tax return.”

Form 990, Page 6, Part VI, Line 19

“Form 1023 and form 990 are available for public inspection upon written requesst to the organization at the address shown on this tax return.”

Filing and Contact Details

Filer

Filer Name
Fort Macarthur Museum Assoc
EIN
95-4297138
Phone
3105482631
Address
323 N CORONADO ST, LOS ANGELES, CA 90026

Signing Officer

Name
Stephen Nelson
Title
President
Phone
3105482631
Signed
2025-11-11
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Stephen Nelson
Formed
1984
Legal Domicile
CA
Voting Board Members
5
Independent Board Members
0
Employees
0

Preparer

Firm
Charles L Horton Inc
Address
PO BOX 990, LA VERNE, CA 91750
Preparer
Charles Horton
Phone
6263049906
Supplemental Narrative

Additional Explanations

Form 990, Page 2, Part III, Line 4D

“Education and familiariztion of the public with miitary history through viewing artifacts, demonstrations of equipemnt and their use, through evnets depicting skirmishes, military and air defence.”

Form 990, Part IX, Line 11G

“Business registration 0 150 0 bank fees 419 0 0 registration 637 0 0 legal fees 5,000 0 0 total 6,056 150 0”

Raw XML Appendix383 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt3610000
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt377000
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt385000
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt394500
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt403500
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt413500
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt422500
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt432500
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt441500
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt451200
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt461200
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt471200
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt48800
IRS990ScheduleD/OtherAssetsOrgGrp/Desc0FT MACARTHUR RELATED ARTIFACT COLLEC
IRS990ScheduleD/OtherAssetsOrgGrp/Desc1US ARMY MESS HALL INTERIOR COLLECTIO
IRS990ScheduleD/OtherAssetsOrgGrp/Desc2DEACTIVATED DUMMY SMALL ARMS COLLECT
IRS990ScheduleD/OtherAssetsOrgGrp/Desc3M16A2 HALFTRACK
IRS990ScheduleD/OtherAssetsOrgGrp/Desc4M3A1 SCOUT CAR
IRS990ScheduleD/OtherAssetsOrgGrp/Desc5GMC 2 1/2 T CCKW 352 (RESTORED_
IRS990ScheduleD/OtherAssetsOrgGrp/Desc640MM GUN M1 (DEMILLED) & M2A1 GUN MO
IRS990ScheduleD/OtherAssetsOrgGrp/Desc7US ARMY RADIO COLLECTION
IRS990ScheduleD/OtherAssetsOrgGrp/Desc8GMC 2 1/2 T CCKW 352 (RESTORED)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc9GE M 1942 SEARCHLIHJT & GEN SET (HDS
IRS990ScheduleD/OtherAssetsOrgGrp/Desc101918 FWD CARGO TRUCK UNRESTORED
IRS990ScheduleD/OtherAssetsOrgGrp/Desc11DODGE WC 56 COMMAND CAR
IRS990ScheduleD/OtherAssetsOrgGrp/Desc121916 GE GM 12 25KW AC GENERATOR
IRS990ScheduleD/OtherAssetsOrgGrp/Desc1390MM GUN M1A1 MOUNT & GUN BARREL SEC
IRS990ScheduleD/OtherAssetsOrgGrp/Desc14GE M1942 SEARCHLIGHT & GEN SET
IRS990ScheduleD/OtherAssetsOrgGrp/Desc15GE M1942 SEARCHLIGHT & GEN SET
IRS990ScheduleD/OtherAssetsOrgGrp/Desc16SPERRY M1938 SEARCHLIGHT & GEN SET
IRS990ScheduleD/OtherAssetsOrgGrp/Desc17US ARMY MANUAL & BOOK COLLECTION
IRS990ScheduleD/OtherAssetsOrgGrp/Desc18DODGE WC 27 AMBULANCE
IRS990ScheduleD/OtherAssetsOrgGrp/Desc19SPERRY M1941 SEARCHLIGHT & GENERATOR
IRS990ScheduleD/OtherAssetsOrgGrp/Desc201918 DDODGE LIGHT REPAIR TRUCK
IRS990ScheduleD/OtherAssetsOrgGrp/Desc21DODGE WC 12 PICKUP
IRS990ScheduleD/OtherAssetsOrgGrp/Desc22US ARMY TELEPHONE COLLECTION 300+
IRS990ScheduleD/OtherAssetsOrgGrp/Desc231916 GE 12 25KW DC GENERATOR
IRS990ScheduleD/OtherAssetsOrgGrp/Desc24GMC 2 1/2 T CCKW 353 (UNRESTORED)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc25ASSTD UNRELATED SEARCHLIGHT, SPARE P
IRS990ScheduleD/OtherAssetsOrgGrp/Desc26GMC 2 1/2 T CCKW 352 (UNRESTORED)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc27DODGE WC12 PICKUP (UNRESTORED)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc28WILLY'S 1/4 TON TRUCK (JEEP)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc29M1 HEIGHT FINDER W/TRIPOD (OPERATION
IRS990ScheduleD/OtherAssetsOrgGrp/Desc30WILLY'S 1/4 T TRUSK (JEEP) -UNRESTOR
IRS990ScheduleD/OtherAssetsOrgGrp/Desc31US ARMY BARRACKS COLLECTION
IRS990ScheduleD/OtherAssetsOrgGrp/Desc32FREUHAUF M1 SEARCHLIGHT TRAILER
IRS990ScheduleD/OtherAssetsOrgGrp/Desc33M1 HEIGHT FINDER W/TRIPOD (DAMAGED)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc34M7 3IN/90MM GUN DIRECTOR
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IRS990ScheduleD/OtherAssetsOrgGrp/Desc36US ARMY UNIFORM COLLECTION
IRS990ScheduleD/OtherAssetsOrgGrp/Desc37WILLYS M274 1/3 T TRUCK (MULE)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc38TRACKER FOFR M9 GUN DIRECTOR
IRS990ScheduleD/OtherAssetsOrgGrp/Desc39M1 HEIGHT FINDER (UNRESTORED)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc401943 THEODOLITE CAMERA FOR 90MM GUN
IRS990ScheduleD/OtherAssetsOrgGrp/Desc41M1 SEARCHLIGHT TRAILER (FREUHAUF)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc42TRAILER 1 T (BEN HUR)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc431942 THEODOLITE TRACKER CAMERA FOR 9
IRS990ScheduleD/OtherAssetsOrgGrp/Desc44SPERRY M1942 SEARCHLIGHT DEC
IRS990ScheduleD/OtherAssetsOrgGrp/Desc45SPERRY M 1942 DEC
IRS990ScheduleD/OtherAssetsOrgGrp/Desc461/4 TON TRAILER (JEEP)
IRS990ScheduleD/OtherAssetsOrgGrp/Desc47MINNEAPOLIS MOLINE PACK HOWITZER AMM
IRS990ScheduleD/OtherAssetsOrgGrp/Desc48K38 TELEPHONE REPAIR TRAILER
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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0EDUCATION AND FAMILIARIZTION OF THE PUBLIC WITH MIITARY HISTORY THROUGH VIEWING ARTIFACTS, DEMONSTRATIONS OF EQUIPEMNT AND THEIR USE, THROUGH EVNETS DEPICTING SKIRMISHES, MILITARY AND AIR DEFENCE.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1A PDF COPY OF TAX FORMS IS PROVIDED TO ALL MEMBERS OF THE GOVERNING BODY BY EMAIL WITH REQUEST TO OFFER AND COMMENTS OR QUESTIONS ABOUT THE FORMS AND THE DATA REFLECTED THEREIN PRIOR TO THE FILING OF THE TAX RETURN.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2FORM 1023 AND FORM 990 ARE AVAILABLE FOR PUBLIC INSPECTION UPON WRITTEN REQUESST TO THE ORGANIZATION AT THE ADDRESS SHOWN ON THIS TAX RETURN.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3BUSINESS REGISTRATION 0 150 0 BANK FEES 419 0 0 REGISTRATION 637 0 0 LEGAL FEES 5,000 0 0 TOTAL 6,056 150 0
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990, PAGE 2, PART III, LINE 4D
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990, PAGE 6, PART VI, LINE 11B
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2FORM 990, PAGE 6, PART VI, LINE 19
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc3FORM 990, PART IX, LINE 11G
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IRS990/TotalFunctionalExpensesGrp/TotalAmt027976
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IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt02004660
IRS990/TotalOtherProgSrvcExpenseAmt017100
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IRS990/TotalRevenueGrp/TotalRevenueColumnAmt00
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IRS990/TypeOfOrganizationAssocInd0X
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IRS990/USAddress/CityNm0LOS ANGELES
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ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd0true
ReturnHeader/BusinessOfficerGrp/PersonNm0STEPHEN NELSON
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0PRESIDENT
ReturnHeader/BusinessOfficerGrp/PhoneNum03105482631
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-11-11
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0FORT MACARTHUR MUSEUM ASSOC
ReturnHeader/Filer/BusinessNameControlTxt0FORT
ReturnHeader/Filer/EIN0954297138
ReturnHeader/Filer/PhoneNum03105482631
ReturnHeader/Filer/USAddress/AddressLine1Txt0323 N CORONADO ST
ReturnHeader/Filer/USAddress/CityNm0LOS ANGELES
ReturnHeader/Filer/USAddress/StateAbbreviationCd0CA
ReturnHeader/Filer/USAddress/ZIPCd090026
ReturnHeader/IRSResponsiblePrtyInfoCurrInd0false
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0954520011
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0CHARLES L HORTON INC
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt0PO BOX 990
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0LA VERNE
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0CA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd091750
ReturnHeader/PreparerPersonGrp/PhoneNum06263049906
ReturnHeader/PreparerPersonGrp/PreparationDt02025-11-13
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0CHARLES HORTON
ReturnHeader/ReturnTs02025-11-13T13:29:57-05:00
ReturnHeader/ReturnTypeCd0990
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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