Geology and ore deposits of the Cottonwood-American Fork Area, Utah / F.C. Calkins, and B.S. Butler ; with sections on history and production, V.C. Heikes
Series Titles:
Professional paper ; 201 Professional paper (Geological Survey (U.S.)) ; no. 201.
At head of title: U.S. Dept. of the Interior, Harold L. Ickes, secretary. Geological survey, W.E. Wrather, director ... 18 folded plates and maps in separate case.