AVE6320976: 1960s: Musical trio plays instruments on stage / Bridgeman Images

AVE6321048: 1950s: Man riding horse / Bridgeman Images

AVE6321063: 1950s: Woman tucks girl into bed, lays under blanket / Bridgeman Images

AVE6321066: 1950s: Close up of men pushing wagon / Bridgeman Images

AVE6321078: 1950s: Woman sits / Bridgeman Images

AVE6321084: 1950s: Man and boy hide near covered wagons / Bridgeman Images

AVE6320206: Europe, 1940s: girl gives father a hug and kiss / Bridgeman Images

AVE6320215: Europe: 1940s: London city buildings on fire, view from above / Bridgeman Images

AVE6320224: Europe, 1940s: abandoned tanks on roads of France / Bridgeman Images

AVE6320297: United States, 1980s: scientist looks at petri dishes under microscope / Bridgeman Images

AVE6320300: United States, 1980s: normal cells divide in situ / Bridgeman Images

AVE6320306: United States, 1980s: animation of immune system in human body / Bridgeman Images

AVE6320324: United States, 1980s: close up blood pressure cuff on female patient / Bridgeman Images

AVE6320327: Europe, 1940s: citizens sleep on Leicester Square underground station platform during air raid / Bridgeman Images

AVE6320438: Unites States, 1970s: fish farming / Bridgeman Images

AVE6320471: United States, 1970s: Antique car driving / Bridgeman Images

AVE6320197: Europe, 1940s: building exterior at night / Bridgeman Images

AVE6320267: Europe, 1940s: fire fighters in London rehearse drill / Bridgeman Images

AVE6320316: United States, 1980s: cartoon phagocyte eats virus / Bridgeman Images

AVE6320352: Unites States, 1970s: man turns button on machine / Bridgeman Images

AVE6320263: Europe, 1940s: pilot stands on ground and talks / Bridgeman Images

AVE6320293: Europe, 1940s: man draws enemy position on map / Bridgeman Images

AVE6320412: Unites States, 1970s: fish fight on sea floor / Bridgeman Images

AVE6320437: Unites States, 1970s: commercial fishing of prawn / Bridgeman Images

AVE6320458: United Kingdom, 1940s: map shows import of materials to Britain / Bridgeman Images

AVE6320387: Unites States, 1970s: water around foot of jetty at night / Bridgeman Images

AVE6320464: United Kingdom, 1940s: view across harbor / Bridgeman Images

AVE6320470: United States, 1970s: Couple in period costume next to car, man helps woman up, couple enter car / Bridgeman Images

AVE6320484: United States, 1950s: baby sits and cries on floor, Child throws toys / Bridgeman Images

AVE6320505: United States, 1950s: lady looks into cot / Bridgeman Images

AVE6320508: United States, 1950s: big book of trains cover / Bridgeman Images

AVE6320520: United States, 1960s: animation of a muscle cell / Bridgeman Images

AVE6320750: United States, 1950s: Man speaks in front of cathedral / Bridgeman Images

AVE6321397: United States, 1960s: Interior of department store, women pass on escalator / Bridgeman Images

AVE6321418: United States, 1940s: Dairy worker closing the latch of a cylindrical butter churn, then turning the churn by a handle / Bridgeman Images

AVE6321436: United States, 1940s: Glass jars travel through a bottling machine on a conveyer belt to be filled with cottage cheese / Bridgeman Images