SZT3024353: French soldiers with gas protection, 1916 (b/w photo) / Bridgeman Images

SZT3024362: German soldiers with gas masks in the First World War (b/w photo) / Bridgeman Images

SZT3024368: German soldiers during a gas alarm, 1917 (b/w photo) / Bridgeman Images

SZT3024418: Natives in the Ngonrongoro area in Tansania, 1931 (b/w photo) / Bridgeman Images

SZT3024446: Historic fisherman wedding in Wuerzburg, 1933 (b/w photo) / Bridgeman Images

SZT3024433: The dome of the market hall in Leipzig, 1928 (b/w photo) / Bridgeman Images

SZT3024442: The village Runstedt is excavated, 1930 (b/w photo) / Bridgeman Images

SZT3024330: Advertising of a pet care business in Berlin, 1910 (b/w photo) / Bridgeman Images

SZT3024536: Germany military hospital train at the eastern front, 1916 (b/w photo) / Bridgeman Images

SZT3024563: German submarines U-12 and U-14, 1914 (b/w photo) / Bridgeman Images

SZT3024528: Withdrawing German troops in Berlin, 1915 (b/w photo) / Bridgeman Images

SZT3024565: Grenade detonation in a German dugout at the Western Front, 1918 (b/w photo) / Bridgeman Images

SZT3023381: American soldiers in Paris, 1917 (b/w photo) / Bridgeman Images

SZT3023405: Christian Weber awards the 'Brown Band', 1938 (b/w photo) / Bridgeman Images

SZT3023417: Captured Italians during the 12th Isonzo battle, 1917 (b/w photo) / Bridgeman Images

SZT3023576: Trans-Siberian Railway, 1905 (b/w photo) / Bridgeman Images

SZT3023615: Woman at a window, 1932 (b/w photo) / Bridgeman Images

SZT3023657: Lithuanian railway station, 1941 (b/w photo) / Bridgeman Images

SZT3023370: Telegraphy station, around 1850 (b/w photo) / Bridgeman Images

SZT3023376: German and Belgian soldiers after the ceasefire in Belgium, 1940 (b/w photo) / Bridgeman Images

SZT3023379: A captured American soldier in France, 1917 (b/w photo) / Bridgeman Images

SZT3023406: Kurt Riezler (b/w photo) / Bridgeman Images

SZT3023547: Uganda railway in British East-Africa at the beginning of the 20th century (b/w photo) / Bridgeman Images

SZT3023577: The Trans-Siberian Railway around 1900 (b/w photo) / Bridgeman Images

SZT3023619: Woman at a lathe in the Colonial School for Women at Rendsburg, 1933 (b/w photo) / Bridgeman Images

SZT3023732: Assistants of the Turkish Red Crescent, 1916 (b/w photo) / Bridgeman Images

SZT3023783: Liane Haid and Alphons Fryland, 1925 (b/w photo) / Bridgeman Images

SZT3023798: Men from Ossilo, 1940 (b/w photo) / Bridgeman Images

SZT3023807: Beginning of the holiday, 1936 (b/w photo) / Bridgeman Images

SZT3023810: Tilly Bebe, 1909 (photo) / Bridgeman Images

SZT3023825: Entrance of the Frederick William University in Berlin, 1931 (b/w photo) / Bridgeman Images

SZT3023831: Students in the University of Berlin, 1931 (b/w photo) / Bridgeman Images

SZT3023837: Gracia Prieto, 1931 (b/w photo) / Bridgeman Images

SZT3023840: The Frederick William University in Berlin, 1934 (b/w photo) / Bridgeman Images

SZT3023846: University in Berlin, 1931 (b/w photo) / Bridgeman Images

SZT3023858: Children's room, 1938 (b/w photo) / Bridgeman Images