- Seton-Watson, Hugh1
- Simmons, Ernest J.1
- Slonim, Marc1
- Sosnkowski, Kazimierz1
- Stevens, Leslie C.1
- Suchý, Čestmír1
- Sztachova, Jirina1
- TSentralʹnyi gosudarstvennyi arkhiv literatury i iskusstva SSSR1
- Thürk, Harry1
- Trubetskaia, Ol'ga Nikolaevna1
- Unesco1
- United Nations. Dept. of Social Affairs1
- United States. Congress. Joint Committee on Atomic Energy1
- Vennard, Edwin1
- Viner, Jacob1
- Woytinsky, Wladimir S.1
- Łączkowski, Bohdan1
- Šochová, Božena1
- Żyliński, Wiesław1