Author
Hafen, LeRoy R. 1893-1985
9
Bancroft, Caroline
5
Colorado Geological Survey
4
EBSCOhost
4
Feitz, Leland
4
Nafziger, Agnes
4
Geological Survey (U.S.)
3
Geological Survey (U.S.),
3
Levine, Brian
3
Leyendecker, Liston E.
3
Lindgren, Waldemar, 1860-1939
3
Ransome, F. L. 1868-1935
3
Ransome, F. L. 1868-1935,
3
Bradley, Christine A. 1952-
2
Brown, Robert L., 1921-2005
2
Cushman, Samuel, -1899
2
Guiteras, Joseph Ramon, 1888-1973
2
King, Joseph E., 1942-
2
Lindgren, Waldemar, 1860-1939,
2
Marshall, Thomas Maitland, 1876-1936
2
Mumey, Nolie, 1891-1984
2
Olmstead, S. R.
2
Parker, Ben H. 1902-1969
2
Smith, Duane A.
2
Sprague, Marshall
2
Allen, O.
1
Beebe, A. H.
1
Bird, Allan G.
1
Bliss, Edward, 1822-1877
1
Buckman, George F.
1
Burkey, Elmer R.
1
Clear Creek County (Colo.)
1
Cobb, Harrison S.
1
Cole, William, active 19th century
1
Colorado Historical Society
1
Colorado Springs Chamber of Commerce
1
Cox, Terry, 1950-
1
Davis, Mark W.
1
Dial, Scott
1
Dorset, Phyllis F.
1
Echla Gold Mining Company
1
Gardner, E. D. 1885-
1
Gilpin, William, 1813-1894
1
Gold Belt Tour Scenic and Historic Byway Association
1
Gregory Gold Mining Company
1
Gunn, Otis B.
1
Gunnison, J. W. 1812-1853
1
Hafen, Ann W. 1893-1970
1
Hambleton, Chalkley J., 1829-
1
Hannibal and St. Joseph Railroad Company
1
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