Geographical and Geological Survey of the Rocky Mountain Region (U.S.)Powell, John Wesley, 1834-19021 map : col., mounted on cloth ; 49 x 71 cm"Julius Bien, Lithographer.""The base chart was engraved for the Statistical Atlas of the United States.""To accompany report on the lands of the arid region of the U.S.""For explanation see chapter on "Land Grants in aid of Internal Improvements."JPEGG 3701 .G4 1878 .D400088950439015091195332engPublicRailroadsMap of the United StatesMapsUnited StatesUniversity of Michigan