Author
United States. Congress. Senate. Committee on Energy and Natural Resources
3
Earth Search, Inc
2
Franks, Herschel A.
2
Giardino, Marco Joseph, 1950-2018
2
United States. National Park Service. Southwest Region. Branch of Cultural Resources Management
2
Yakubik, Jill-Karen, 1956-
2
United States. Congress. House. Committee on Natural Resources
1
United States. National Park Service
1
United States. National Park Service. Denver Service Center
1