Keywords: W.H. Drucker, 1917.jpg en Prof Mr W H Drucker 1917 1917 1917 Newspaper article found online at http //www geheugenvannederland nl/ /nl/items/CBG01 5118 geheugenvannederland nl unknown photographer other versions PD-old-70-1923 Uploaded with UploadWizard Professors from the Netherlands |