Scale: 1 inch = 112 feet. Note: Drifts and crosscuts from Annual Report, De Lamar M. County Lim. For year ending March 31st, 1898; 1 map : col. ; 25 x 55 cm.
Members of the National Geographic Society's 1935 Salmon River Expedition. Left to right: Maynard Owen Williams (photographer, chief editor of National Geographic), Philip J. Shenon (U.S. Geological Survey), Howard Flint (U.S. Forest Service, died...
U.S. Geological Survey geology and topographic map of northeastern Oregon and northwestern Idaho showing mines and location of pleistocene, miocene, post-carboniferous and carboniferous soils.