A colored map of Oregon, Washington, and parts of Idaho produced by the Oregon Pacific Railroad Company circa 1880. The map shows railroad lines under construction and proposed routes and connections, steamship lines along rivers and other navigable waterways, built and projected connections, and boundaries of land grants held by the Oregon Pacific Railroad Company. Scale [ca. 1:1,800,000]. Relief shown by form lines. Original map mounted on cloth backing. Item has also been identified as bb0175546.

A map of the Columbia River through the Cascade Range. The map shows the route of the Oregon Steam Navigation Company's Portage Railroad [Cascade Railroad] and Oregon Portage Railway [Ruckle Road]. The depth is shown in soundings.

A map of the Columbia River that shows the route of the river from The Dalles to Celilo. The map also shows the route of the Dalles and Celilo Railroad. Depths are shown by soundings.