Bettag, Otto (1906-1990): Interview and memoir, O-B465, Container: Tapes; Container: et al. UIS Archives/Special Collections.

Bettag, Otto (1906-1990): Interview and memoir, O-B465, Container: Tapes; Container: et al. UIS Archives/Special Collections. https://uis.libraryhost.com/repositories/2/resources/1017 Accessed September 28, 2024.