4 p. Selected pages of the Report of the Chief of Engineers for 1875. Includes reports on the improvement of rivers in Oregon and Washington territory.
4 p. Selected pages of the Report of the Chief of Engineers for 1878. Included are annual reports detailing improvements of the Columbia, Snake, and Willamette rivers in Oregon and Washington territory.
13 p. Selected pages of the Report of the Chief of Engineers for 1873. Also included are annual reports on the works of river improvement for the Willamette and Columbia rivers, Oregon.
65 p. Includes sections of Appendix PP: 1883 annual report of Capt. Charles F. Powell, Corps of Engineers, detailing construction, and other works of river and harbor improvements for the Willamette and Columbia rivers.
58 p. Includes sections of Appendix OO: 1881 annual report of Maj. G. L. Gillespie, Corps of Engineers, Bvt. Lieut. Col., detailing construction, navigation, surveys and other works of river improvements for the Willamette and Columbia rivers.