Author
American Geological Institute
2
Colorado Geological Survey
2
Adams, Ramon F. 1889-1976
1
Carter, Harvey L. 1904-1994
1
Collins, Donna Bishop,
1
Colorado Association of School Librarians. Bibliography Committee
1
Denver Public Library
1
Dobie, J. Frank 1888-1964
1
Holt, Richard D.
1
Hornbaker, A. L.,
1
Jones, Olive M. 1872-
1
Jones, William,
1
Momaday, Natachee Scott
1
Nelson-Moore, James L.
1
Pearl, Richard Howard
1
Rogers, John William, 1894-1965
1
Wilkinson, Charles F., 1941-
1