Authors: State by State (sorted alphabetically by title)
- United States. Army Air Forces. Air Force, 2nd. Altitude Indoctrination Unit -
- United States. Army. American Expeditionary Forces -
- United States. Army. Corps of Engineers. Manhattan District -
- United States. Army. Signal Corps -
- United States. Bureau of Animal Industry -
- United States. Bureau of Commercial Fisheries -
- United States. Bureau of Education -
- United States. Bureau of Naval Personnel -
- United States. Bureau of Reclamation -
- United States. Bureau of the Census -
- United States. Central Intelligence Agency -
- United States. Children's Bureau -
- United States. Circuit Court (Massachusetts) -
- United States. Coast Guard -
- United States. Commission to the Madrid Exposition (1892- ) -
- United States. Congress -
- United States. Congress. House. Committee on Homeland Security -
- United States. Congress. House. Committee on Naval Affairs -
- United States. Congress. House. Committee on Patents -
- United States. Congress. House. Committee on Science and Astronautics. -
- United States. Congress. House. Committee on Un-American Activities -
- United States. Congress. Joint Committee on the Conduct of the War -
- United States. Congress. Senate -
- United States. Congress. Senate. Committee on Patents -
- United States. Constitutional Convention (1787) -