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.

16 p. Selected pages of the Appendixes to the Report of the Chief of Engineers for 1874. Included are annual reports upon works of improvements for the Willamette and Columbia rivers.

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.

16 p. Selected pages of the Appendixes to the Report of the Chief of Engineers for 1874. Included are annual reports upon works of improvements for the Willamette and Columbia rivers.

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.

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.

16 p. Selected pages of the Appendixes to the Report of the Chief of Engineers for 1874. Included are annual reports upon works of improvements for the Willamette and Columbia rivers.

16 p. Selected pages of the Appendixes to the Report of the Chief of Engineers for 1874. Included are annual reports upon works of 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...