Ore deposits in the vicinity of the London fault of Colorado - Singewald, Quentin Dreyer, 1902-; Butler, B. S. (Bert Sylvenus), 1877-1960 (Washington, U.S. Govt. Print. Off., 1941)
At head of title: United States Dept. of the Interior, Harold L. Ickes, secretary. Geological survey, W. C. Mendenhall, director.
Eight folded plates in pocket.
Prepared in cooperation with the state of Colorado and the Colorado metal mining fund.
Bibliographical footnotes.
Keywords: Ore deposits -- Colorado; Geology -- Colorado