- Medvedkin, Alexander1
- Mehring, Franz1
- Open Society Archives at Central European University1
- Pares, Bernard1
- Penzlin, Eduard1
- Radio Free Europe/Radio Liberty, Inc - Research Institute1
- Rauschning, Hermann1
- Room, Abram1
- Roosevelt, Franklin D.1
- Rose, William John1
- Rosenberg, Artur1
- Roshal, Grigory1
- Russinow, Andrei1
- Rutherford, J. F.1
- Salvemini, Gaetano1
- Samizdat Archives of Radio Free Europe1
- Schuschnigg, Kurt1
- Seldes, George1
- Shneider, Evgenii1
- Smith, Andrew1