Sanke card
Willi Sanke published a series of about 600-700 numbered photo-postcards, showing World War I aviators c. 1910 - 1918/20. He was based in Berlin and his cards were often issued under the name of Postkartenvertrieb W. Sanke . On some of these postcards, the photographers are identified: for example, Fritz Fischer, Nicola Perscheid, and Alfred Krauth.
