Author
Powell, John Wesley, 1834-1902
Smithsonian Institution
2
Thompson, A. H. 1839-1906
2
Coues, Elliott, 1842-1899
1
Drummond, Willis, 1808-1879
1
Dutton, Clarence E. 1841-1912
1
Geographical and Geological Survey of the Rocky Mountain Region (U.S.)
1
Gilbert, Grove Karl, 1843-1918
1
Goode, G. Brown 1851-1896
1