- Bebel, August, 1840-1913 (2)
- Beske, Anneliese (2)
- International Institute for Social History (2)
- Müller, Eckhard (2)
- Beike, Heinz (1)
- Dlubek, Rolf (1)
- Herrmann, Ursula, fl. 1962- (1)
- Kuczynski, Christel (1)
- Malik, Dieter (1)
- Seeber, Gustav (1)
- Sellin, Gerhard, 1943- (1)