Compiled from the official Records of the General Land Office. . . . Compiled and Drawn by A. F. Dinsmore. 1 inch to 12 miles. County boundaries and military and Indian reservations are shown in color. Also shows status of public land surveys, towns and cities, locations of U.S. land offices, roads, and railroad lines.
Relief is shown by hachures.
Also a black and white base map for this date. Post Route Map of the States of Oregon and Washington with adjacent parts of Idaho, Nevada, California, and British Columbia. Showing post offices with the intermediate distances and mail routes in operation on the 1st of June, 1891. Published . . . 1 inch to 10 miles.