Author/Creator
- United States1,279
- United States. Congress. House1,070
- United States. Army. Corps of Engineers825
- United States. War Department738
- United States. War Department. Engineer Dept702
- United States. Congress. Senate276
- United States. Congress. House. Committee on Interstate and Foreign Commerce. (1892- 1981)198
- United States. Dept. of Defense (1949- )170
- United States. Congress. Senate. Committee on Commerce. (1825-1946)145
- United States. Bureau of Reclamation131
- United States. Congress. Senate. Committee on Interior and Insular Affairs. (1948-1977)124
- United States. Department of the Interior108
- United States. Congress. Senate. Committee on Public Works. (1947-1977)91
- United States. Congress. House. Committee on Interior and Insular Affairs. (1951-1993)90
- United States. Congress. House. Committee on Public Works. (1947-1975)73
- Chavez, Dennis, 1888-196260
- United States. Congress. House. Committee on Claims. (1794-1946)57
- Geological Survey (U.S.), issuing body52
- United States. Geological Survey48
- United States. Congress. House. Committee on Rivers and Harbors. (1883-1946)47