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Nonprofit · EIN 86-0473992

COLORADO RIVER HISTORICAL SOCIETY INC

Tax-exempt · BULLHEAD CITY, AZ 86430

Financials

$165K$48K2023$40K$53K2024$57K$66K2025
Revenue Expenses · by fiscal year end
Financials of COLORADO RIVER HISTORICAL SOCIETY INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2026990$56,901$65,870-$8,969$708,410$0$708,410
June 30, 2025990$40,189$52,569-$12,380$717,628$249$717,379
June 30, 2024990$164,559$48,438$116,121$729,759$0$729,759
Financial details: 990 for the year ended June 30, 2026

Revenue

Contributions, gifts and grants
$48,294
Membership dues
$10,767
Program service revenue
$0
Investment income
$343
Net income from sales of inventory
$8,264
Other revenue
$8,264

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Legal fees
$225
Depreciation
$17,169
Program services (functional)
$53,317
Management and general (functional)
$5,241
Fundraising (functional)
$7,312

Balance sheet and other

Total assets, start of year
$717,628
Total assets, end of year
$708,410
Total liabilities, end of year
$0
Net assets, end of year
$708,410
Land, buildings and equipment
$579,300
Gross receipts
$60,448
Employees
0
Volunteers
20
Year formed
1983
State of legal domicile
AZ

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended June 30, 2026, highest compensation first.

NameTitleHours / weekCompensation
DENISE VALLONDIRECTOR
Trustee or director
4$0
ELLEN BROWNSECRETARY
Trustee or director
1$0
BARBARA BRANDTVICE PRESIDENT
Trustee or director
6$0
CAROLYN ADAMSDIRECTOR
Trustee or director
4$0
KAROLE FINKLELSTEINPRESIDENT
Officer
10$0
PAUL BARTHADIRECTOR
Officer
6$0
GALE GRASSESPRAQUEDIRECTOR
Officer
15$0
LAURIE THOMPSONTREASURER
Officer
15$0
990 for the year ended June 30, 2025: 9 people
NameTitleHours / weekCompensation
KAROLE FINKELSTEINPRESIDENT
Trustee or director, Officer
5$0
CARLA LUCASTREASURER
Trustee or director, Officer
25$0
DENISE VALLONDIRECTOR
Trustee or director
4$0
ELLEN BROWNSECRETARY
Trustee or director
1$0
JIM LUCASDIRECTOR
Trustee or director
11$0
BARBARA BRANDTVICE PRESIDENT
Trustee or director
6$0
CAROLYN ADAMSDIRECTOR
Trustee or director
4$0
MARY WALLDIRECTOR
Trustee or director, Officer
6$0
RAY WESCHDIRECTOR
Trustee or director
5$0
990 for the year ended June 30, 2024: 9 people
NameTitleHours / weekCompensation
KAROLE FINKELSTEINPRESIDENT
Trustee or director, Officer
5$0
CARLA LUCASTREASURER
Trustee or director, Officer
29$0
LAURIE THOMPSONDIRECTOR
Trustee or director
15$0
DENISE VALLONDIRECTOR
Trustee or director
4$0
ELLEN BROWNSECRETARY
Trustee or director
5$0
JIM LUCASDIRECTOR
Trustee or director
11$0
BARBARA BRANDTVICE PRESIDENT
Trustee or director
6$0
CAROLYN ADAMSDIRECTOR
Trustee or director
2$0
MARY WALLDIRECTOR
Trustee or director, Officer
5$0

Address and contacts

Address (IRS master file)
PO BOX 1599, BULLHEAD CITY, AZ 86430-1599
In care of
% LAURIE THOMPSON
Mailing address (990-N for 2017)
po box 1599, bullhead city AZ 86430
Principal officer (990 for 2025)
LAURIE THOMPSON, PO BOX 1599, BULLHEAD CITY, AZ 86430
Principal officer (990-N for 2017)
Cheryl Howard, po box 1599, bullhead city AZ 86430
Signed the 990
LAURIE THOMPSON, TRESURER
Phone
(928) 754-3399
Return prepared by
HRB TAX GROUP INC

Mission

THE MISSION OF THE COLORADO RIVER HISTORICAL SOCIETY SHALL BE TO OPERATE A MUSUEM TO PROMOTE INTEREST AND KNOWLEDGE CONCERNING THE HISTORY OF THE LOWER COLORADO RIVER AREA, MOST SPECIFICALLY THE TRISTATE AREA.

990 for the year ended June 30, 2026

Program accomplishments

  • GIFT SHOP IN THE MUSUEM
    Expenses $53,317 · revenue $11,811

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026990 on file
2024June 30, 2025November 17, 2025990 on file
2023June 30, 2024November 15, 2024990 on file

IRS record

EIN
86-0473992
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1985
Accounting year ends
June
Files
Form 990 or 990-EZ
Assets (IRS master file)
$708,410
Income (IRS master file)
$60,448

Filing history

FormYear endedRevenueExpensesAssetsReturn
990June 2026$56,901$65,870$708,410XML
990June 2025$40,189$52,569$717,628XML
990June 2024$164,559$48,438$729,759XML
990June 2023$76,379$82,099$555,024IRS
990June 2022$42,640$32,731$551,591IRS
990May 2021–––IRS
990-N for 2017
Officer: Cheryl Howard
May 31, 2018≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 86-0473992).

Questions about COLORADO RIVER HISTORICAL SOCIETY INC

What is the EIN of COLORADO RIVER HISTORICAL SOCIETY INC?
The employer identification number (EIN) of COLORADO RIVER HISTORICAL SOCIETY INC is 86-0473992.
Is COLORADO RIVER HISTORICAL SOCIETY INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1985.
Are donations to COLORADO RIVER HISTORICAL SOCIETY INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does COLORADO RIVER HISTORICAL SOCIETY INC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of COLORADO RIVER HISTORICAL SOCIETY INC due?
The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did COLORADO RIVER HISTORICAL SOCIETY INC last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended June 2026.
Who is the principal officer of COLORADO RIVER HISTORICAL SOCIETY INC?
The 990 for the year ended June 30, 2026 names LAURIE THOMPSON.
Who are the officers and directors of COLORADO RIVER HISTORICAL SOCIETY INC?
The 990 for the year ended June 30, 2026 lists 8 people; 0 received compensation from the organization.
How much revenue does COLORADO RIVER HISTORICAL SOCIETY INC have?
On its 990 for the year ended June 30, 2026 it reported revenue of $56,901, expenses of $65,870 and total assets of $708,410 at year end.

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