Mitchell, S. Augustus (Samuel Augustus), 1792-1868Relief shown by hachures. "54"--P. from an unidentified atlas. "Entered according to Act of Congress in the year 1867 by S. Augustus Mitchell Jr. in the Clerks Office of the District Court for the Eastern District of Pennsylvania."23 x 30 centimetersJPEGUMN_ALMA:9961058360001701eng1867PublicMap of Oregon, Washington, Idaho, and part of MontanaMapsIdahoMontanaOregonWashington1867University of Minnesota