Julius Prüwer. Hartungs Künstlerkarte, Fotograf Alexander Binder
<bdi><a href="https://www.wikidata.org/wiki/Q97094" class="extiw" title="d:Q97094"><span title="German photographer">Alexander Binder</span></a>
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Schlesische Theater- und Musikwoche, 9. September 1925 (<a rel="nofollow" class="external text" href="https://sbc.org.pl/Content/323346/iv781955-1925-28-0001.pdf">online</a>)