Entrepreneur and arts collector Otto Bamberger (1885–1933) with his daughter Ruth (1914–1983) on the compound of progressive boarding school <i><a href="https://en.wikipedia.org/wiki/Schule_am_Meer" class="extiw" title="en:Schule am Meer">Schule am Meer</a></i> (School by the Sea) on the East Frisian island Juist in Prussia.
Unknown author<span style="display: none;">Unknown author</span>
Inheritance of the Bamberger family, Lichtenfels, Upper Franconia, Bavaria, Germany