Rudolf Dührkoop (1848-1918) was a pioneering German photographer.
Self-portrait, 1912
Clotilde von Derp, 1912
Diaper rash
Gertrude und Ursula Falke, 1906
Rudolf Eucken, 1908 Nobel Laureate in Literature
Unidentified woman, 1900
Woman at a writing desk, 1909
Woman at the Piano, 1910
Woman next to window, 1904