- Mixed Claims Commission, United States and Germany3
- National Patent Planning Commission3
- Naval Research Office3
- Old-Age Pension System, Special Committee to Investigate, Senate3
- Operation and Maintenance Department3
- Panama Railroad Company3
- Pearl Harbor Attack, Joint Committee on Investigation of3
- Philippine War Damage Commission3
- Phosphate Resources of United States, Joint Committee to Investigate Adequacy and Use of3
- Physical Fitness Committee3
- President's Committee on Civil Service Improvement3
- Publications Division3
- Puerto Rico Reconstruction Administration3
- Rare Book Collection3
- Rational Defense Migration, Select Committee Investigating, House3
- Reciprocity Information Committee3
- Reduction of Nonessential Federal Expenditures3
- Selective Service Records Office3
- Senatorial Campaign Expenditures, 1946, Special Committee to Investigate, Senate3
- Serials Division3