Dinsmore, A. F.United States. General Land OfficeRelief shown by hachures. Prime meridians: Greenwich and Washington, D.C. 1 map: col.; 70 x 89 cmJPEG435d19df-9e12-4746-bf1f-3c796cc1aa89engPublicState of Oregon; compiled from the official records of the General Land Office and other sources under supervision of A.F. Dinsmore, Chief of Drafting Division, G.L.O., Department of the Interior; compiled and drawn by A.F. Dinsmore.MapsOregon1889University of Michigan