Oral history archive based at the Institute for Contemporary History in Hamburg
- Transcript excerpt FZH / WdE 298, pp. 100-104, based on the slightly shortened audio excerpt from the interview with Steffi and Kurt Wittenberg, Part II, 8.1.1995, 3A, 00:24:00, interviewer: Sybille Baumbach.
- Interview with Esther Bauer (B), November 20, 1998. Interviewer: Jens Michelsen (M), minute 00:09 to 3:53