Publisher
- Chickamauga and Chattanooga National Military Park Commission (War Department)1
- Chickamauga and Chattanooga National Park Commission18
- Chickamauga and Chattanooga National Park Commission (War Department)1
- Chief of Engineers1
- Chief of Ordnance10
- Child Development Office39
- Child Development Services Bureau11
- Child Labor Tax Division1
- Children's Bureau2,448
- Church Claims Board1
- Circuit Courts of Appeals1
- Citizenship Board (State Department)2
- Civil Aeronauctics Board21
- Civil Aeronautics Administration1,863
- Civil Aeronautics Authority240
- Civil Aeronautics Board3,294
- Civil Affairs Division100
- Civil Defense Office4
- Civil Defense Office (Army)557
- Civil Defense Planning Office1