Author
Chelini, J. M.
3
Berg, Richard B., 1937-
2
Weeks, Fred Boughton, 1864-1942
2
Bascom, F. 1862-1945
1
Billings Geological Society
1
Clarke, Frank Wigglesworth, 1847-1931
1
Czehura, S. J.
1
Darton, Nelson Horatio, 1865-1948
1
Gannett, Henry, 1846-1914
1
Garrett, Howard L., 1924-
1
Gilmour, Ernest H.
1
Goode, Richard Urquhart, 1858-1903
1
Hay, Robert, 1835-1895
1
McClernan, Henry G.
1
Mineral resources survey
1
Rautio, Sandra A.
1
Sahinen, Uuno M. 1906-
1
Sonderegger, John L.
1
Weed, Walter Harvey, 1862-1944
1