- Albion, Mark S.1
- Aldanov, Mark Aleksandrovich1
- Aleksandrov, Grigori2
- American Federation of Labor1
- Andracki, Stanisław1
- Arnshtam, Leo1
- Aroneanu, Eugène1
- Arsen'ev, Nikolai Sergeevich1
- Arturov, O. A1
- Ascoli, Max1
- Baker, Nina Brown1
- Balkan Section1
- Balogh, Eva S.1
- Balzak, S. S.1
- Beliaev, V.1
- Belügyminisztérium Központi Irattára1
- Berdiaev, Nikolaĭ1
- Bereczky, Albert1
- Berlin, Isaiah1
- Białous, Ryszard1