- Bortstieber, Gertrud8
- Bergmann-Michel, Ella4
- Buckreis, Adam2
- Nóvé, Béla2
- Andreev, Vasilii1
- Bergman-Michel, Ella1
- Bystrianskiĭ, V.1
- Communist International (Comintern)1
- David, F.1
- Halle, Fannina W.1
- Koerber, Lenka von1
- Magos-Gimes, Judit1
- Open Society Archives at Central European University1
- Russinow, Andrei1
- Samizdat Archives1
- Samizdat Archives of Radio Free Europe1
- Spannocchi, Lelio1
- Spengler, Oswald1
- Troitskii, I. I.1
- Voegeli, Adolf1