Bentonite deposits of the northern Black Hills district Wyoming, Montana, and South Dakota

Knechtel, Maxwell M. (Maxwell McMichael), 1897-1984.
Washington, [D.C.] : U.S. G.P.O., 1962.

Beryl-bearing pegmatites in the Ruby Mountains and other areas in Nevada and northwestern Arizona

Olson, J. C. (Jerry Chipman), 1917-2013.
Washington, [D.C.] : U.S. G.P.O., 1960.

Chromite and other mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvan

Pearre, Nancy C.
Washington, [D.C.] : U.S. G.P.O., 1960.

Geology and mineral deposits of the St. Regis-Superior area, Mineral County, Montana

Campbell, Arthur B., 1924-1971.
Washington, [D.C.] : U.S. G.P.O., 1960.

Strategic graphite, a survey : an appraisal of domestic resources

Cameron, Eugene N. (Eugene Nathan), 1910-1999.
Washington, [D.C.] : U.S. G.P.O., 1960.

Stratigraphy of the Little Rocky Mountains and encircling foothills Montana

Knechtel, Maxwell M. (Maxwell McMichael), 1897-1984.
Washington, [D.C.] : U.S. G.P.O., 1959.