- Garratt, G. T.1
- Gerasimov, Sergei1
- Great Britain, Foreign and Commonwealth Office1
- Halle, Fannina W.1
- Hitler, Adolf1
- Hubbard, Leonard E.1
- Ibárruri, Dolores1
- Ivanov, Aleksandr1
- Ivens, Joris1
- Kemény, István1
- 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
- Pares, Bernard1
- Penzlin, Eduard1
- Pyriev, Ivan1