Data update history
November 25, 2023
Posted financials
Added Form 990 for fiscal year 2021
June 17, 2023
Posted financials
Added Form 990 for fiscal year 2022
June 15, 2023
Updated personnel
Identified 4 new personnel
Nonprofit Types
Arts, culture, and humanities nonprofitsMuseumsCharities
Issues
Arts, cultural, and humanities
Characteristics
MembershipsState / local levelReceives government fundingEndowed supportTax deductible donations
General information
- Address
- PO Box 692
- Hot Springs, SD 57747
- County
- Fall River County, SD
- Phone
- (605) 745-6017
- Facebook page
- The-Mammoth-Site-of-Hot-Springs-South-DakotaÂ
- Twitter profile
- @mammothsiteÂ
IRS details
- EIN
- 46-0337824
- Fiscal year end
- October
- Taxreturn type
- Form 990
- Year formed
- 1975
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- A56: Natural History, Natural Science Museums
- NAICS code, primary
- 7121: Museums, Historical Sites, and Similar Institutions
- Parent/child status
- Independent
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