SZT6363948: Ekaterine "Kato" Svanidze, Stalin's first wife, undated (b/w photo) / Bridgeman Images

SZT6363990: Leon Trotsky with his secretary Erwin Wolf, 1936 (b/w photo) / Bridgeman Images

SZT6364023: Kliment Voroshilov, 1915 (b/w photo) / Bridgeman Images

SZT6364029: Kliment Voroshilov with Clara Zetkin, 1927 (b/w photo) / Bridgeman Images

SZT6364041: Exhibition hall at the St. Louis World's Fair, 1904 (b/w photo) / Bridgeman Images

SZT6364053: Construction of a tower on the Berlin-Johannisthal airfield, 1913 (b/w photo) / Bridgeman Images

SZT6364059: Units of the Allied Intervention Powers, 1918 (b/w photo) / Bridgeman Images

SZT6364080: Homeless people in front of a warming center, 1921 (b/w photo) / Bridgeman Images

SZT6364125: Slum in a city on the Don River in the Soviet Union, 1932 (b/w photo) / Bridgeman Images

SZT6364158: Quill (b/w photo) / Bridgeman Images

SZT6364161: Prussian orders (b/w photo) / Bridgeman Images

SZT6364212: Knight's Cross bearer Fritz Dinger, 1942 (b/w photo) / Bridgeman Images

SZT6363955: Joseph W. Stalin during the defense of Moscow, 1941 (b/w photo) / Bridgeman Images

SZT6363979: Leon Trotsky at the time of the Russian Civil War and afterwards, 1924 (b/w photo) / Bridgeman Images

SZT6364003: Leon Trotsky's villa in France, 1933 (b/w photo) / Bridgeman Images

SZT6364006: David Bronstein, undated (b/w photo) / Bridgeman Images

SZT6364018: Kliment Voroshilov, 1941 (b/w photo) / Bridgeman Images

SZT6364021: Kliment Voroshilov as observer of the Sino-Japanese War, 1937 (b/w photo) / Bridgeman Images

SZT6364099: Building of the Entente powers in Vladivostok (b/w photo) / Bridgeman Images

SZT6364132: Mechanization in the Soviet Union, 1932 (b/w photo) / Bridgeman Images

SZT6364150: Indulgence certificate for the Collegiate Church of S. Erasmi in Berlin, 1512 (b/w photo) / Bridgeman Images

SZT6364171: Cholera in East Prussia, 1905 (b/w photo) / Bridgeman Images

SZT6364186: Knight's Cross bearer Wilhelm Kaiser, 1942 (b/w photo) / Bridgeman Images

SZT6364189: Knight's Cross bearer Gotthard Essbach, 1941 (b/w photo) / Bridgeman Images

SZT6364216: Knight's Cross bearer Heinz Breitschneider, 1943 (b/w photo) / Bridgeman Images

SZT6364243: Knight's Cross bearer Ulrich Diesing, 1942 (b/w photo) / Bridgeman Images

SZT6364250: Knight's Cross bearer Gerhard Korthals (b/w photo) / Bridgeman Images

SZT6364253: Knight's Cross bearer Carl-Heinz Greve, 1942 (b/w photo) / Bridgeman Images

SZT6364298: Knight's Cross bearer, 1943 (b/w photo) / Bridgeman Images

SZT6364304: Knight's Cross bearer Heinrich Bartels, 1944 (b/w photo) / Bridgeman Images

SZT6364313: Knight's Cross bearer with the Knight's Cross, 1942 (b/w photo) / Bridgeman Images

SZT6364337: Henry of Prussia at the Kieler Woche, 1910 (b/w photo) / Bridgeman Images

SZT6364340: Henry of Prussia on a long-distance car journey, 1905 (b/w photo) / Bridgeman Images

SZT6364346: Henry of Prussia during the Prinz-Heinrich-Fahrt, 1910 (b/w photo) / Bridgeman Images

SZT6364352: Henry of Prussia repairs his car at the Prinz-Heinrich-Fahrt, 1911 (b/w photo) / Bridgeman Images

SZT6364367: Man from Upper Franconia, 1904 (b/w photo) / Bridgeman Images