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.
4 p. Selected pages of the Report of the Chief of Engineers for 1877. Included are annual reports detailing improvements of rivers in Oregon and Washington territory.
32 p. Includes sections of Appendix FF: Annual reports of Maj. N. Michler, Corps of Engineers, detailing works of river 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.
63 p. Includes sections of Appendix JJ: 1877 annual report of Maj. John M. Wilson, Corps of Engineers, detailing surveys and statistics about and works of river improvements for the Willamette and Columbia rivers.
65 p. Selected sections of Appendix GG: Report of Major N. Michler, Corps of Engineers. Included are annual reports upon works of river improvements for the Willamette, Columbia, and Snake rivers.
53 p. Includes sections of Appendix KK: 1879 annual report of Maj. John M. Wilson, Corps of Engineers, detailing surveys and works of river improvements for the Willamette and Columbia rivers.