6 p. Selected pages of the Report of the Chief of Engineers for 1879. Included are annual reports upon works of river improvements for the Willamette and Columbia rivers.

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 Columbia...

9 p. Selected pages of the Report of the Chief of Engineers, United States Army for 1882. Included are annual reports upon works of river and harbor improvements for the Willamette and Columbia rivers.

42 p. Includes sections of Appendix JJ: 1878 annual report of Maj. John M. Wilson, Corps of Engineers, detailing surveys and works of river improvements for the Willamette and Columbia rivers. Also included are...

74 p. Includes sections of Appendix MM: 1880 annual report of Maj. G. L. Gillespie, Corps of Engineers, Bvt. Lieut. Col., detailing construction, surveys and other works of river improvements for the Willamette...

59 p. Includes sections of Appendix OO: 1882 annual report of Capt. Charles F. Powell, Corps of Engineers, detailing construction, surveys and other works of improvement for the Willamette and Columbia rivers....

9 p. Selected pages of the Report of the Chief of Engineers, United States Army for 1882. Included are annual reports upon works of river and harbor improvements for the Willamette and Columbia rivers.

9 p. Selected pages from the Annual Report of the Chief of Engineers, United States Army for 1883. Included are annual reports upon works of river and harbor improvements for the Willamette and Columbia rivers.

6 p. Selected pages of the Report of the Chief of Engineers for 1879. Included are annual reports upon works of river improvements for the Willamette and Columbia rivers.

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 Columbia...