Map of that part of Washington Territory lying west of the Cascade Mounts to accompany the report of Surveyor General, 1857.
Description:
Map shows Washington Territory township grid, existing towns, Indian reservations, trails, roads, mountain passes, railroads, and mills. Includes explanation. Relief shown by hachures and spot heights. Scale [1:1,140,480].
Date:
1857
Creator:
United States Surveyor General.