SZT2992129: Lesson in a police academy, 1931 (b/w photo) / Bridgeman Images

SZT2992157: Joseph Austen Chamberlain during a commemorative speech, 1936 (b/w photo) / Bridgeman Images

SZT2992162: Police troop in parade uniform, 1935 (b/w photo) / Bridgeman Images

SZT2992174: Traffic policeman in Munich, 1929 (b/w photo) / Bridgeman Images

SZT2992177: Traffic control on the highway, 1937 (b/w photo) / Bridgeman Images

SZT2992180: Austen Chamberlain on the terrace of the Palace of Nations, 1926 (b/w photo) / Bridgeman Images

SZT2992192: Parking lot in Berlin, 1927 (b/w photo) / Bridgeman Images

SZT2992198: President Calvin J. Coolidge in Chicago, 1927 (b/w photo) / Bridgeman Images

SZT2992207: Robert Freiherr Lucius von Ballhausen (b/w photo) / Bridgeman Images

SZT2992216: Bruno Doehring, Alfred Hugenberg and Steinhoff at a ceremony of the foundation of the German Reich, 1931 (b/w photo) / Bridgeman Images

SZT2992220: Visitor in the Strandbad Wansee, 1940 (b/w photo) / Bridgeman Images

SZT2992221: Children in the tent, 1936 (b/w photo) / Bridgeman Images

SZT2992224: Jane Addams (b/w photo) / Bridgeman Images

SZT2992232: Fun water ride, 1896 (b/w photo) / Bridgeman Images

SZT2992241: Erich Ludendorff and Max Hoffmann, 1917 (b/w photo) / Bridgeman Images

SZT2992248: Erich Ludendorff with SA, 1935 (b/w photo) / Bridgeman Images

SZT2992255: Arthur Henderson, Horace Rumold, Julius Curtius and Bernhard Wilhelm von Buelow, 1931 (b/w photo) / Bridgeman Images

SZT2992259: Arthur Henderson in Paris (b/w photo) / Bridgeman Images

SZT2992260: Arthur Henderson M. Dovgalewsky in London, 1929 (b/w photo) / Bridgeman Images

SZT2992263: RAD parade before Adolf Hitler, 1934 (b/w photo) / Bridgeman Images

SZT2992269: Feierabend by Arthur Kampf (b/w photo) / Bridgeman Images

SZT2992277: SS-men at a performance test, 1938 (b/w photo) / Bridgeman Images

SZT2992286: German Reichspost (b/w photo) / Bridgeman Images

SZT2992295: Pointer telegraph, 1941 (b/w photo) / Bridgeman Images

SZT2992298: Phototelegraph, 1930 / Bridgeman Images

SZT2992315: Switchboard, 1935 (b/w photo) / Bridgeman Images

SZT2992321: Mueggelsee beach (b/w photo) / Bridgeman Images

SZT2992322: Sunday Merciful (litho), German School, (19th century) / Bridgeman Images

SZT2992331: Theodore Roosevelt on a hunting trip in the Yellowstone National Park, 1905 (b/w photo) / Bridgeman Images

SZT2992332: Theodore Roosevelt's 'Rough Riders', 1898 (b/w photo) / Bridgeman Images

SZT2992335: Charles Dawes, 1927 (b/w photo) / Bridgeman Images

SZT2992338: Charles Dawes, 1927 (b/w photo) / Bridgeman Images

SZT2992340: Charles Dawes and his wife Hannah Dawes, 1926 (b/w photo) / Bridgeman Images

SZT2992351: Adolf Hitler and Robert Bosch at the Berlin Auto Show, 1936 (b/w photo) / Bridgeman Images

SZT2992362: Erich Ludendorff, 1927 (b/w photo) / Bridgeman Images

SZT2992365: Erich Ludendorff, 1935 (b/w photo) / Bridgeman Images