The Swiss progressive educator Rudolf Aeschlimann (* 1884 in Burgdorf, Canton Bern, Switzerland; † November 13, 1961 ibid.) was working at <i>Freie Schulgemeinde</i> (= Free School Community) in Wickersdorf near Saalfeld in the Thuringian Forest from 1906 to 1925 and from 1925 to 1934 at <i><a href="https://en.wikipedia.org/wiki/Schule_am_Meer" class="extiw" title="en:Schule am Meer">Schule am Meer</a></i> on the East Frisian island Juist in Prussia, before returning to Switzerland.
Unknown author<span style="display: none;">Unknown author</span>
Private archive of Prof. Dr. Peter Dudek, Germany