Nonprofit · EIN 23-7260145
MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY
Tax-exempt · HAINES FALLS, NY 12436
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $178,686 | $104,766 | $73,920 | $718,620 | $2,559 | $716,061 |
| December 31, 2024 | 990 | $92,477 | $87,970 | $4,507 | $644,100 | $3,768 | $640,332 |
| December 31, 2023 | 990 | $83,088 | $77,476 | $5,612 | $639,248 | $4,683 | $634,565 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $171,139
- of which government grants
- $18,267
- Membership dues
- $36,390
- Program service revenue
- $120
- Investment income
- $6,058
- Net income from fundraising events
- $1,097
- Net income from sales of inventory
- $272
- Other revenue
- $1,369
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $0
- Other salaries and wages
- $26,410
- Salaries, compensation and benefits (total)
- $28,901
- Professional fundraising fees
- $0
- Accounting fees
- $3,050
- Occupancy
- $14,322
- Depreciation
- $14,459
- Program services (functional)
- $82,747
- Management and general (functional)
- $22,019
Balance sheet and other
- Total assets, start of year
- $644,100
- Total assets, end of year
- $718,620
- Total liabilities, end of year
- $2,559
- Net assets, end of year
- $716,061
- Land, buildings and equipment
- $390,288
- Net assets without donor restrictions
- $716,061
- Gross receipts
- $182,660
- Employees
- 5
- Year formed
- 1972
- State of legal domicile
- NY
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 |
|---|---|---|---|
| Cynthia LaPierre | Director Trustee or director | 1 | $0 |
| Adrienne Larys | President thru August 2025 Trustee or director, Officer | 20 | $0 |
| Debbie Fromer | Treasurer Trustee or director, Officer | 1 | $0 |
| Lynn Carlson | Director Trustee or director | 1 | $0 |
| Bob Gildersleeve | Director - Emeritus July 2025 Trustee or director | 3 | $0 |
| Joanne Ainsworth | Corporate Secretary Trustee or director, Officer | 2 | $0 |
| Johanna Titus | Director Trustee or director | 1 | $0 |
| George Van Dyke | President since August 2025 Trustee or director, Officer | 20 | $0 |
| Reed Rubey | Director Trustee or director | 1 | $0 |
| Linda Geary | Membership Secretary Trustee or director, Officer | 1 | $0 |
| Carli Gazoorian | Vice President Trustee or director, Officer | 1 | $0 |
| George Hewitt | Director Trustee or director | 1 | $0 |
| John Fromer | Director Trustee or director | 1 | $0 |
| Larry Gardner | Director Trustee or director | 1 | $0 |
| Ryan Penny | Director Trustee or director | 1 | $0 |
4 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Paul Slutzky | Director Trustee or director | 1 | $0 |
| Michael Allegretti served thru Octo | Director Trustee or director | 1 | $0 |
| Alexandra Prince served thru Januar | Director Trustee or director | 1 | $0 |
| John Curran | Director thru July 2025 Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 20 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Cynthia LaPierre | Trustee Trustee or director | 1 | $0 |
| Adrienne Larys | President Trustee or director, Officer | 30 | $0 |
| Debbie Fromer | Interim Treasurer Trustee or director, Officer | 1 | $0 |
| Lynn Carlson | Trustee Trustee or director | 1 | $0 |
| Bob Gildersleeve | Trustee Trustee or director | 3 | $0 |
| Joanne Ainsworth | Corporate Secretary Trustee or director, Officer | 2 | $0 |
| Paul Kreger | Trustee Trustee or director | 1 | $0 |
| Johanna Titus | Trustee Trustee or director | 1 | $0 |
| George Van Dyke | Vice President Trustee or director, Officer | 20 | $0 |
| Reed Rubey | Trustee Trustee or director | 1 | $0 |
| Linda Geary | Membership Secretary Trustee or director, Officer | 1 | $0 |
| Alexandra Prince | Trustee Trustee or director | 1 | $0 |
| Carli Gazoorian | Trustee Trustee or director | 1 | $0 |
| George Hewitt | Trustee Trustee or director | 1 | $0 |
| John Fromer | Trustee Trustee or director | 1 | $0 |
| Larry Gardner | Trustee Trustee or director | 1 | $0 |
| Michael Allegretti | Trustee Trustee or director | 1 | $0 |
| Ryan Penny | Trustee Trustee or director | 1 | $0 |
| Gary Slutzky | Vice President Trustee or director, Officer | 2 | $0 |
| Paul Slutzky | Trustee Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 21 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Cynthia LaPierre | Trustee Trustee or director | 1 | $0 |
| Adrienne Larys | President Trustee or director, Officer | 30 | $0 |
| John Curran | Trustee Trustee or director | 1 | $0 |
| Debbie Fromer | Interim Treasurer Trustee or director, Officer | 1 | $0 |
| Lynn Carlson | Trustee Trustee or director | 1 | $0 |
| Bob Gildersleeve | Trustee Trustee or director | 3 | $0 |
| Gary Slutzky | Vice President Trustee or director, Officer | 1 | $0 |
| Joanne Ainsworth | Corporate Secretary Trustee or director, Officer | 2 | $0 |
| Paul Kreger | Trustee Trustee or director | 1 | $0 |
| Johanna Titus | Trustee Trustee or director | 1 | $0 |
| Dede Thorpe | Trustee Trustee or director | 3 | $0 |
| George Van Dyke | Trustee Trustee or director | 3 | $0 |
| Reed Rubey | Trustee Trustee or director | 1 | $0 |
| Linda Geary | Membership Secretary Trustee or director, Officer | 1 | $0 |
| Alexandra Prince | Trustee Trustee or director | 1 | $0 |
| Carli Gazoorian | Trustee Trustee or director | 1 | $0 |
| George Hewitt | Trustee Trustee or director | 1 | $0 |
| John Fromer | Trustee Trustee or director | 1 | $0 |
| Larry Gardner | Trustee Trustee or director | 1 | $0 |
| Michael Allegretti | Trustee Trustee or director | 1 | $0 |
| Ryan Penny | Trustee Trustee or director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 263, HAINES FALLS, NY 12436-0263
- Principal officer (990 for 2025)
- George VanDyke, PO Box 366, Haines Falls, NY 12436
- Signed the 990
- George VanDyke, President
- Phone
- (518) 589-6647
- Website
- www.mths.org
- Return prepared by
- Donna Bates CPA
Mission
Historic preservation and education
Program accomplishments
- The Mountain Top Historical Society is dedicated to discovering and preserving the unique and rich history of the Catskill High Peaks. The Society is a not-for-profit organization and maintains a Visitor and Art Trail Center and the Ulster and Delaware train depot on our campus in Haines Falls. We are located on scenic Route 23A at the gateway to the Mountain Top.Expenses $82,747 · revenue $178,686
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 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
- 23-7260145
- 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
- 1974
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $718,620
- Income (IRS master file)
- $182,660
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $178,686 | $104,766 | $718,620 | IRS |
| 990 | December 2024 | $92,477 | $87,970 | $644,100 | XML |
| 990 | December 2023 | $83,088 | $77,476 | $639,248 | XML |
| 990 | December 2022 | $114,347 | $71,398 | $639,825 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
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 23-7260145).
Questions about MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY
- What is the EIN of MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY?
- The employer identification number (EIN) of MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY is 23-7260145.
- Is MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1974.
- Are donations to MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY 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 MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY 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 MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY 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 MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY?
- The 990 for the year ended December 31, 2025 names George VanDyke.
- Who are the officers and directors of MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY?
- The 990 for the year ended December 31, 2025 lists 19 people; 0 received compensation from the organization.
- How much revenue does MOUNTAIN TOP HISTORICAL SOCIETY OF GREENE COUNTY have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $178,686, expenses of $104,766 and total assets of $718,620 at year end.
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- HUNGARIAN-AMERICAN HOUSE HISTORICAL COLLECTION INC EIN 82-1832988 · last filed 990-EZ for 2023
- MOUNTAIN TOP SMALL ANIMAL SANCTUARY - SHELTER EIN 14-2001321 · last filed 990-N for 2025
- CATSKILL MOUNTAINS JUNIOR GOLF INC EIN 35-2460536 · last filed 990-N for 2025