Parts of western Wyoming, southeastern Idaho and northeastern Utah / U.S. Geological and Geographical Survey of the Territories ; F.V. Hayden, U.S. geologist in charge ; A.C. Peale, geological assistant ; Henry Gannett, topographical assistant.Geological and Geographical Survey of the Territories (U.S.)[1878]"56"--Lower right margin."Surveyed in 1877."Copy 2: Imperfect: brittle and slightly mutilated, with some loss of map.Relief shown by contours and spot heights.Shows geologic formations.To accompany the Survey's 12th annual report (1878).cartographic