See for more information:
Katja B. Zaich, “Ich bitte dringend um ein Happyend.” Deutsche Bühnenkünstler im niederländischen Exil 1933-1945, (Frankfurt am Main, 2001), 101, 165, 246
A portrait of Otto Wallburg can be found at the website israeli-art.com
Otto Wasserzug had a child that survived the war.
Addition of a visitor of the website