Title: Columbia River and minor tributaries. Letter from the Secretary of War transmitting pursuant to section 1 of the River and Harbor Act approved January 21, 1927, a letter from the Chief of Engineers, United States Army, dated March 29, 1932, submitting a report, together with accompanying papers and illustrations, containing a general plan for the improvement of the Columbia River and minor tributaries for the purposes of navigation and efficient development of its water power, the control of floods, and the needs of irrigation
Subjects: Dredging
Places: Columbia River