Survey of Potomac River Banks and adjacent lands from Washington, D. C., to Great Falls.

Fish-ways, Great Falls. Letter from the Acting Secretary of War, transmitting letter from the Acting Chief of Engineers, inclosing report from Major Lydecker, in response to a resolution of the House calling for information relative to the erection of fish-ways at the Great Falls of the Potomac.

United States. Congress. House. Committee on the District of Columbia