32 p. Includes sections of Appendix FF: Annual reports of Maj. N. Michler, Corps of Engineers, and Maj. John M. Wilson, Corps of Engineers, detailing works of river improvements for the Willamette and...
Rock formations; Utility poles; Trees; Tree stumps; Firs; Road construction; Riverbanks; Hills;
Colored image. Close-in view of the Pillars of Hercules rock formation as seen from the vista of the Columbia River, facing the riverbank. In the foreground is the riverbank where it touches upon a sandy...