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Author/Creator
- United States. Congress. House. Committee on Natural Resources6
- United States. Congress. Senate. Committee on Energy and Natural Resources4
- United States. Congressional Budget Office3
- Cramer, Howard Ross, 1925-1
- Creagh, Richard (Photographer)1
- Emory University Archives1
- Flanagan, David (Rock climber)1
- Henderson, Bob1
- Jeffries, Stephanie B.1
- Lennon, J.1
- Taplin, Kim1
- United States. Bureau of Land Management1
- United States. Bureau of Outdoor Recreation1
- United States. Congress. House. Committee on Interior and Insular Affairs1
- United States. Congress. House. Committee on Resources1
- United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Public Lands, National Parks, and Forests1
- United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission1
- United States. National Park Service1
- United States. National Park Service. Denver Service Center1
- Wentworth, Thomas R.1