725476 Wilhelm I, King of Prussia and first German Emperor (1797-1888), is recognised as the Kaiser of the newly united German Empire at the Treaty of Versailles in 1871 (colour litho) by Rohling, Carl (1849-1922); Private Collection; (add.info.: Wilhelm I, King of Prussia and first German Emperor (1797-1888), is recognised as the Kaiser of the newly united German Empire at the Treaty of Versailles in 1871. Illustration from House of Hohenzollern in Pictures and Words by Carl Rohling and Richard Sternfeld. Published by Martin Oldenbourg in Berlin, c 1900.); 穢 Look and Learn.