Data update history
June 1, 2026
Posted financials
Added Form 990N for fiscal year 2025
June 2, 2025
Posted financials
Added Form 990N for fiscal year 2024
June 1, 2024
Posted financials
Added Form 990N for fiscal year 2023
June 1, 2024
Updated personnel
Identified 1 new personnel
June 1, 2023
Posted financials
Added Form 990N for fiscal year 2022
Nonprofit Types
Arts, culture, and humanities nonprofitsCharities
Issues
Arts, cultural, and humanitiesHistory
Characteristics
State / local levelTax deductible donationse-Postcard filer
General information
- Address
- PO Box 927
- Hill City, SD 57745
- Metro area
- Rapid City, SD
- County
- Pennington County, SD
IRS details
- EIN
- 26-3311144
- Fiscal year end
- December
- Taxreturn type
- Form 990-N / e-Postcard
- Year formed
- 2009
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- A80: Historical Societies, Historical Preservation
- Parent/child status
- Independent
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