Frankfurt a. M., Zirkus Albert Schumann (Postkarte)
Unknown author<span style="display: none;">Unknown author</span> Publisher: Verlag Ottmar Zieher, München
before 23 January 1907 <div style="display: none;">date QS:P,+1907-01-23T00:00:00Z/7,P1326,+1907-01-23T00:00:00Z/11</div> (gelaufen)
postcard (<a href="https://en.wikipedia.org/wiki/Private_collection" class="extiw" title="en:Private collection">Private collection</a><div style="display: none;">institution QS:P195,Q768717</div>)