- Production and Marketing Administration1,815
- Prohibition Bureau42
- Project: Books for the Adult Blind14
- Propaganda or Money Alleged to have been used by Foreign Governments to Influence United States Senators, Special Committee to Investigate, Senate5
- Proving Ground3
- Proving Ground, Sandy Hook8
- Provost Marshal General's Office81
- Provost Marshal General, Office of (Army)3
- Public Assistance Bureau233
- Public Building Service2
- Public Buildings Administration38
- Public Buildings Commission22
- Public Buildings Office1
- Public Buildings Service30
- Public Buildings and Grounds Committee1,246
- Public Buildings and Grounds Committee, House394
- Public Buildings and Grounds Committee, Senate266
- Public Buildings and Grounds Office62
- Public Buildings and Grounds Office (Engineer Department, War Department)3
- Public Buildings and Grounds, Committee on12