Subject
- United Gas Improvement Company1
- United Office and Professional Workers of America1
- United States. Air Force7
- United States. Army2
- United States. Army Medical Center2
- United States. Army. Medical Corps1
- United States. Department of Commerce1
- United States. Economic Cooperation Administration1
- United States. Energy Research and Development Administration1
- United States. Environmental Protection Agency2
- United States. Forest Service1
- United States. National Aeronautics and Space Administration15
- United States. National Bureau of Standards2
- United States. National Labor Relations Board1
- United States. Navy8
- United States. Office of Scientific Research and Development1
- United States. Office of Scientific Research and Development. National Defense Research Committee18
- United States. Patent and Trademark Office1
- United States. Surgeon-General's Office1
- United States. War Department1