AVE6324534: Monkey Undergoing Surgery in Operating Theatre / Bridgeman Images

AVE6324615: 1910s: Schoolgirl waits in bed for teacher to tuck her in, but the teach refuses and instead scolds her then proceeds to be kind to the other students / Bridgeman Images

AVE6324633: 1910s: Elderly woman kisses young girl on forehead / Bridgeman Images

AVE6324636: 1910s: Young girl hides behind a shed and has flashback to having her palm read / Bridgeman Images

AVE6324708: 1910s: Woman holds a cat in a large group of people / Bridgeman Images

AVE6324701: 1910s: Group of three men on a sidewalk, two leave then the last one leaves and meets a different larger group of men / Bridgeman Images

AVE6320337: Europe, 1940s: bomb released from plane / Bridgeman Images

AVE6320392: Unites States, 1970s: oil rig in sea / Bridgeman Images

AVE6320447: Unites States, 1970s: submarine launched / Bridgeman Images

AVE6320544: United States, 1960s: animation of valves as they open and close with blood flow in heart / Bridgeman Images

AVE6320462: United Kingdom, 1940s: farmers look at sheep and cows at agricultural market / Bridgeman Images

AVE6320729: United States, 1950s: City square, officials ride horses through crowd / Bridgeman Images

AVE6320482: United States, 1970s: High angle view of city traffic / Bridgeman Images

AVE6320777: 1970s: Section of brain viewed through microscope / Bridgeman Images

AVE6320911: 1960s: Man stands playing clarinet in band before large crowd / Bridgeman Images

AVE6320914: 1960s: Houses on shore of river as boat goes by / Bridgeman Images

AVE6321055: 1950s: Boy eating on grass / Bridgeman Images

AVE6321062: 1950s: Family eating around fire / Bridgeman Images

AVE6321122: United States, 1970s: A police officer interviews a woman who shares her story / Bridgeman Images

AVE6321916: 1940s: Houses and cars on residential street / Bridgeman Images

AVE6322799: A man walks up a ramp while rolling a barrel up it and into the back of a truck / Bridgeman Images

AVE6323772: United States, 1960s: cartoon animation of positive crank case ventilation valve / Bridgeman Images

AVE6323686: United States, 1960s: man uses back angle measure in car / Bridgeman Images

AVE6323701: United States, 1970s: man gives interview opinion in street / Bridgeman Images

AVE6323743: United States, 1960s: worker looks down microscope / Bridgeman Images

AVE6323758: United States, 1960s: Firebird One car on test road / Bridgeman Images

AVE6323911: United States, 1940s: animation of sun with hole on side / Bridgeman Images

AVE6323914: United States, 1940s: hands move around clock face / Bridgeman Images

AVE6323920: United States, 1940s: time lapse as pink rose opens / Bridgeman Images

AVE6324240: United States 1950s: On a quiet night, a security guard points a car driver to a parking spot / Bridgeman Images

AVE6324309: 1970s: UNITED STATES: young people relax together. / Bridgeman Images

AVE6324390: 1930s: Car drives along curving roads in hilly terrain / Bridgeman Images

AVE6320842: 1960s: Ferry on river / Bridgeman Images

AVE6320845: 1960s: Man plays drums while on stage / Bridgeman Images

AVE6320825: 1970s: Boy plays with balloon / Bridgeman Images

AVE6320843: 1960s: Sun sets above trees / Bridgeman Images