niemiecki postcard publisher The Postkartenvertrieb W. Sanke in Berlin published a series of about 600-700 numbered postcards, showing World War I era aviators from about 1910 to około 1918
date QS:P,+1918-00-00T00:00:00Z/9,P1480,Q5727902
/20, when he went out of business.[1][2] On some of these postcards, the photographers are identified.
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