- Bortstieber, Gertrud4
- Nóvé, Béla2
- Pallai, Péter2
- Samizdat Archives2
- Balogh, Eva S.1
- Berdiaev, Nikolai1
- Capa, Robert1
- Communist International (Comintern)1
- Garratt, G. T.1
- Great Britain, Foreign and Commonwealth Office1
- Hitler, Adolf1
- Hubbard, Leonard E.1
- Ivens, Joris1
- Kommunisticheskaia partiia Sovetskogo Soiuza1
- Krivitsky, W. G.1
- Lenin, Vladimir Ilʹich1
- Littlepage, John D.1
- Ludecke, Kurt Georg Wilhelm1
- Magos-Gimes, Judit1
- Open Society Archives at Central European University1