- Bulgarian Unit1
- Campbell, Robert Wellington1
- Castro, Fidel1
- Catti De Gasperi, Maria Romana1
- Clemens, Walter C.1
- Clissold, Stephen1
- Cohen, Percy S.1
- Cohn-Bendit, Daniel1
- Conference on Behavioral Sciences and the Mass Media1
- Conference on the Russian Revolution1
- Constitutional and Legal Policy Institute at OSI-Budapest1
- Czechoslovak Unit1
- Deutsch, Harold C.1
- Devecseri, Lászlóné1
- Dinerstein, Herbert S.1
- Dinov, Todor1
- Duclos, Jacques1
- Ello, Paul1
- Farkas, Endre1
- Feiwel, George R.1