- Architect, Supervising1,816
- Production and Marketing Administration1,815
- Federal Register Office1,798
- Internal Revenue Service1,795
- Securities and Exchange Commission1,680
- Railroad Administration1,657
- Armed Services Committee1,615
- Judiciary Committee, Senate1,605
- Foreign Agricultural Relations Office1,577
- Ways and Means Committee1,570
- Farm Credit Administration1,516
- Government Operations Committee1,516
- Public Roads Bureau1,511
- Naval Affairs Committee1,491
- Social Security Administration1,486
- National Institutes of Health1,478
- Northern and Northwestern Lake Survey1,476
- Procurement Division1,476
- Housing and Urban Development Department1,467
- Tax Court1,448