SZT3017970: Policeman takes school children across the street, 1928 (b/w photo) / Bridgeman Images

SZT3017978: Medical investigation of new recruits, 1935 (b/w photo) / Bridgeman Images

SZT3017987: Support column provide German troops with supplies, 1944 (b/w photo) / Bridgeman Images

SZT3018002: Pumpjacks in Los Angeles, 1924 (b/w photo) / Bridgeman Images

SZT3018023: Petroleum field in Pennsylvania around 1860 (b/w photo) / Bridgeman Images

SZT3018029: Oil production in Galicia, 1918 (b/w photo) / Bridgeman Images

SZT3018031: Fire at the Glaspalast (Glass Palace) in Munich, 1931 (b/w photo) / Bridgeman Images

SZT3018034: Returning frontline soldiers in Berlin, 1918 (b/w photo) / Bridgeman Images

SZT3018037: Audience in a theater in Berlin, 1905 (b/w photo) / Bridgeman Images

SZT3017527: Big crowds at the World Exhibition in New York on the opening day, 1939 (b/w photo) / Bridgeman Images

SZT3017532: Visitors on the opening day of the World Exhibition in New York, 1939 (b/w photo) / Bridgeman Images

SZT3017536: Inauguration of the Hungarian Pavilion for the World Exhibition of New York, 1939 (b/w photo) / Bridgeman Images

SZT3017545: Site of the Golden Gate Exhibition in San Francisco, 1938 (b/w photo) / Bridgeman Images

SZT3017556: King Albert I at the opening of the World Exposition in Antwerp, 1930 (b/w photo) / Bridgeman Images

SZT3017557: Opening of the World Exposition in New York, 1939 (b/w photo) / Bridgeman Images

SZT3017559: Exhibition Hall of the World Exhibition in New York, 1938 (b/w photo) / Bridgeman Images

SZT3017562: Exhibition Hall of the World Exhibition in New York, 1939 (b/w photo) / Bridgeman Images

SZT3017567: Aerial view of the grounds of the World Exhibition in New York, 1939 (b/w photo) / Bridgeman Images

SZT3017574: Construction work on the occasion of the World Exhibition in Barcelona, 1929 (b/w photo) / Bridgeman Images

SZT3017585: Main entrance of the World Exhibition in Brussels, 1935 (b/w photo) / Bridgeman Images

SZT3017586: Degradation of the world exhibition in Brussels, 1935 (b/w photo) / Bridgeman Images

SZT3017587: Construction work on the site of the World Exhibition in Brussels, 1935 (b/w photo) / Bridgeman Images

SZT3017590: Italian Pavilion at the Brussels World Exhibition, 1935 (b/w photo) / Bridgeman Images

SZT3017594: Modern railways at the world exhibition in Brussels, 1935 (b/w photo) / Bridgeman Images

SZT3017598: Site of the World Exhibition in Chicago, 1893 (b/w photo), Arnold, Charles Dudley (b.1844) / Bridgeman Images

SZT3017599: Men in guard uniforms at the World Exhibition in Chicago, 1893 (b/w photo) / Bridgeman Images

SZT3017606: Opening ceremony of the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017608: Opening ceremony of the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017618: Exhibition Building at the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017619: Japanese Pavilion at the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017621: Italian Pavilion at the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017628: Egyptian pavilion at the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017638: View over site of the World's Fair in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017640: Manchurian Pavilion at the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017641: Science building at the World Exhibition in Chicago, 1933 (b/w photo) / Bridgeman Images

SZT3017646: Flying Cologne in the train station Friedrichstrasse, 1938 (b/w photo) / Bridgeman Images