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...
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.
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.