AVE6328736: United States, 1960s: view across towers in city / Bridgeman Images

AVE6325710: United States, 1970s: Plane flies overhead / Bridgeman Images

AVE6326435: United States, 1960s: men look at documents in office / Bridgeman Images

AVE6326416: United States, 1960s: people walk by city building / Bridgeman Images

AVE6326843: 1930s: UNITED STATES: rotating coils in pasteurization machine. / Bridgeman Images

AVE6325517: Man Turns Away from Moving Machinery and Examines Mechanical Component / Bridgeman Images

AVE6325540: Men Stood on Balcony Overlooking Car Park / Bridgeman Images

AVE6325761: United States, 1970s: Police chase speeding car down mountain road / Bridgeman Images

AVE6328186: UNITED STATES: 1981: Men sat at mission control desks before space flight. / Bridgeman Images

AVE6328303: 1980s: Men sit in audience / Bridgeman Images

AVE6328523: United States, 1960s: police man talks to medic at hospital / Bridgeman Images

AVE6328665: Gold Bullion Coin in Different Sizes / Bridgeman Images

AVE6328682: Family Hear Noise and Head to Their Nuclear Shelter / Bridgeman Images

AVE6325415: United States, 1950s: Men bounce basketball, man talks into camera / Bridgeman Images

AVE6325464: 1950s: Man backs up tractor to pile of logs / Bridgeman Images

AVE6327641: United States, 1950s: Aerial pan of earth from space / Bridgeman Images

AVE6327854: 1950s: Young woman stands at front of college classroom / Bridgeman Images

AVE6328040: United States, 1940s: Teenager empties tablets down sink / Bridgeman Images

AVE6327846: 1950s: Tape player reels spin / Bridgeman Images

AVE6327873: 1950s: Young woman stands at lectern / Bridgeman Images

AVE6327933: America, c.1990s: Three astronauts work on exterior of space shuttle Endeavour / Bridgeman Images

AVE6328050: United States, 1940s: Teenagers talking next to lockers / Bridgeman Images

AVE6327559: Puerto Rico, 1960s: Men work construction: building being built / Bridgeman Images

AVE6327574: Puerto Rico, 1960s: Man harvests sugarcane with machete / Bridgeman Images

AVE6327679: Russia, 1950s: A scientist works on a satellite as Soviet Union leader Khrushchev discusses plans / Bridgeman Images

AVE6327700: United States, 1950s: Men take a missile out of a car and bring it to a launch pad / Bridgeman Images

AVE6328175: UNITED STATES: 1981: Row of satellite dishes lighting up. / Bridgeman Images

AVE6328304: 1980s: Senators applaud in senate / Bridgeman Images

AVE6328934: United States, 1970s: view through car windscreen at night / Bridgeman Images

AVE6328962: United States, 1930s-1940s: A low angle shot of steam vents / Bridgeman Images

AVE6328922: United States, 1970s: view through vehicle window on dark day and rain / Bridgeman Images

AVE6326939: United States, 1950s: two men speak at desk in office / Bridgeman Images

AVE6327137: United States, 1960s: tank on back of train / Bridgeman Images

AVE6326995: Egypt, 1970s: As the sun rises, a group of camel riders pass by pyramids in the desert / Bridgeman Images

AVE6327124: United States, 1960s: man walks down steps of plane / Bridgeman Images

AVE6327224: United States, 1940s: Japanese Naval officer climbs aboard ship / Bridgeman Images