- Plant Industry Bureau; Agriculture Dept.4
- Plant Industry Office1
- Plant Industry, Bureau of117
- Plant Industry, Soils, and Agricultural Engineering Bureau837
- Plant Quarantine Bureau30
- Plant Quarantine and Control Administration55
- Plant and Operations Office27
- Plaquemine, La., Special Committee on Delay in Completion of Lock at (House)1
- Platt National Park4
- Pneumatic Tube Commission2
- Pneumatic Tubes, Joint Commission on Government Purchase of4
- Pneumatic-Tube Mail Service Joint Commission1
- Pointing Committee, House1
- Political Activities, Lobbying, and Campaign Contributions, Special Committee to Investigate2
- Political Activity of Government Personnel, Commission on3
- Pomology Division36
- Population Growth and the American Future, Commission on9
- Pornographic Materials, Current, Select Committee on, House1
- Port Facilities Commission1
- Porter Statue Board1