Publisher
- Civil and Defense Mobilization Office197
- Civil-Service Laws, Special Committee to Investigate Administration and Operation of, Senate3
- Civilian Conservation Corps50
- Civilian Defense Office327
- Civilian Manpower Management Office (Navy)2
- Civilian Production Administration38
- Claims Committee5,460
- Claims Committee, House7,738
- Claims Committee, Senate6,240
- Claims, Committee on333
- Classification Division33
- Clearinghouse for Federal Scientific and Technical Information59
- Coal Commission7
- Coal Research Office119
- Coast Artillery Division3
- Coast Artillery Fire Board8
- Coast Artillery Office32
- Coast Artillery Office (formerly Artillery Office)1
- Coast Artillery School23
- Coast Artillery School, Fort Monroe8