Nonprofit · EIN 37-1399761
WATERLOO MUSEUM SOCIETY
Also known as Monroe County History Museum
Tax-exempt · WATERLOO, IL 62298
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $29,777 | $21,508 | $8,269 | $722,847 | $0 | $722,847 |
| December 31, 2024 | 990 | $23,715 | $24,679 | -$964 | $695,658 | $0 | $695,658 |
| December 31, 2023 | 990 | $40,432 | $17,782 | $22,650 | $681,816 | $0 | $681,816 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $19,674
- Program service revenue
- $0
- Investment income
- $4,980
- Net income from fundraising events
- $5,123
- Other revenue
- $5,123
Expenses
- Grants and similar amounts paid
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Occupancy
- $13,494
- Program services (functional)
- $21,508
Balance sheet and other
- Total assets, start of year
- $695,658
- Total assets, end of year
- $722,847
- Total liabilities, end of year
- $0
- Net assets, end of year
- $722,847
- Land, buildings and equipment
- $514,872
- Publicly traded securities
- $194,439
- Gross receipts
- $30,590
- Employees
- 0
- Volunteers
- 25
- Year formed
- 2000
- State of legal domicile
- IL
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 December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| NORMA REHEIS | BOARD MEMBER Trustee or director | 2 | $0 |
| MIKE HIMSTEDT | BOARD MEMBER Trustee or director | 2 | $0 |
| TOM SMITH | BOARD MEMBER Trustee or director | 2 | $0 |
| JUDI HORRELL | BOARD MEMBER Trustee or director | 2 | $0 |
| CLAUDIA ASSELMEIER | BOARD MEMBER Trustee or director | 2 | $0 |
| KARYN ALBERS | BOARD MEMBER Trustee or director | 2 | $0 |
| SHELBY MATHES | PRESIDENT Officer | 10 | $0 |
| SUE WATTERS | SECRETARY Officer | 10 | $0 |
| CURTISS WITTBRACHT | TREASURER Officer | 5 | $0 |
| DAVE SAWYER | VICE PRESIDENT Officer | 5 | $0 |
990 for the year ended December 31, 2024: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| NORMA REHEIS | BOARD MEMBER Trustee or director | 5 | $0 |
| MIKE HIMSTEDT | BOARD MEMBER Trustee or director | 5 | $0 |
| GENE HENKLER | BOARD MEMBER Trustee or director | 2 | $0 |
| TOM SMITH | BOARD MEMBER Trustee or director | 2 | $0 |
| JUDI HORRELL | BOARD MEMBER Trustee or director | 5 | $0 |
| CLAUDIA ASSELMEIER | BOARD MEMBER Trustee or director | 2 | $0 |
| KARYN ALBERS | BOARD MEMBER Trustee or director | 5 | $0 |
| SHELBY MATHES | PRESIDENT Officer | 10 | $0 |
| SUE WATTERS | SECRETARY Officer | 10 | $0 |
| CURTISS WITTBRACHT | TREASURER Officer | 10 | $0 |
| DAVE SAWYER | VICE PRESIDENT Officer | 10 | $0 |
990 for the year ended December 31, 2023: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| TOM SMITH | BOARD MEMBER Trustee or director | 2 | $0 |
| GENE HENKLER | BOARD MEMBER Trustee or director | 2 | $0 |
| CLAUDIA ASSELMEIER | BOARD MEMBER Trustee or director | 2 | $0 |
| JUDI HORRELL | BOARD MEMBER Trustee or director | 2 | $0 |
| MIKE HIMSTEDT | BOARD MEMBER Trustee or director | 5 | $0 |
| NORMA REHEIS | BOARD MEMBER Trustee or director | 12 | $0 |
| DAVE SAWYER | VICE PRESIDENT Officer | 4 | $0 |
| SHELBY MATHES | PRESIDENT Officer | 5 | $0 |
| CURTISS WITTBRACHT | TREASURER Officer | 10 | $0 |
| SUE WATTERS | SECRETARY Officer | 5 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 28, WATERLOO, IL 62298-0028
- In care of
- % CURTISS WITTBRACHT
- Mailing address (990-N for 2013)
- PO Box 28, Waterloo IL 62298
- Principal officer (990-N for 2013)
- Curtiss Wittbracht, 6466 Boehne Drive, Waterloo IL 62298
- Signed the 990
- CURTISS WITTBRACHT, TREASURER
- Phone
- (618) 540-9519
Mission
DISPLAY ARTIFACTS OF LOCAL AND AMERICAN HISTORY AND CONDUCT EDUCATIONAL PRESENTATIONS
Program accomplishments
- Display of artifacts and presentations on various historical events.Expenses $21,508 · revenue $29,777
What it must file and when
IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 37-1399761
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2000
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Arts, culture and humanities (A540)
- Assets (IRS master file)
- $722,847
- Income (IRS master file)
- $30,590
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $29,777 | $21,508 | $722,847 | XML |
| 990 | December 2024 | $23,715 | $24,679 | $695,658 | XML |
| 990 | December 2023 | $40,432 | $17,782 | $681,816 | XML |
| 990 | December 2022 | $21,541 | $16,101 | $641,681 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990-N for 2013 Officer: Curtiss Wittbracht | December 31, 2013 | ≤ $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 37-1399761).
Questions about WATERLOO MUSEUM SOCIETY
- What is the EIN of WATERLOO MUSEUM SOCIETY?
- The employer identification number (EIN) of WATERLOO MUSEUM SOCIETY is 37-1399761.
- Is WATERLOO MUSEUM SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2000.
- Are donations to WATERLOO MUSEUM SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does WATERLOO MUSEUM SOCIETY file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of WATERLOO MUSEUM SOCIETY due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did WATERLOO MUSEUM SOCIETY last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of WATERLOO MUSEUM SOCIETY?
- The 990-N for 2013 names Curtiss Wittbracht.
- Who are the officers and directors of WATERLOO MUSEUM SOCIETY?
- The 990 for the year ended December 31, 2025 lists 10 people; 0 received compensation from the organization.
- How much revenue does WATERLOO MUSEUM SOCIETY have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $29,777, expenses of $21,508 and total assets of $722,847 at year end.
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- KASKASKIA-CAHOKIA TRAIL COALITION EIN 83-1794318 · last filed 990-N for 2025
- SISTER CITIES OF PORTA LOO EIN 37-1108466 · last filed 990-N for 2025
- MONROE COUNTY ARTS ALLIANCE EIN 81-1062067 · last filed 990-N for 2025
- ARCHAEOLOGICAL RESEARCH CENTER EIN 85-2873013 · last filed 990-N for 2025
- MONROE COUNTY HISTORICAL SOCIETY EIN 37-6061904 · last filed 990-N for 2025
- MANIFESTING MUSICIANS NFP EIN 33-2704885 · last filed 990-N for 2025
All nonprofits in WATERLOO · Illinois · Arts, culture and humanities