AVE6326840: 1930s: UNITED STATES: men unload milk churns at creamery receiving room. / Bridgeman Images

AVE6326885: 1950s: Man stands at map explaining likely trajectory of hurricane landfall / Bridgeman Images

AVE6326918: United States, 1960s: man speaks on panel / Bridgeman Images

AVE6326921: 1930s: Woman and man sit on armchair, smile and talk, child approaches them, woman holds the child and sits her on the armchair, they talk and smile / Bridgeman Images

AVE6326927: United States, 1960s: man speaks to crowd / Bridgeman Images

AVE6326930: United States, 1960s: strikers raise fists / Bridgeman Images

AVE6326933: United States, 1950s: view through trees in mountains / Bridgeman Images

AVE6327044: United States, 1970s: After a service, a member of a cult turns off the flames of a candles at the alter and holds hands with the cult's leader / Bridgeman Images

AVE6327047: United States, 1970s: A woman listens intently as a fortune teller explains her readings / Bridgeman Images

AVE6327050: United States, 1970s: Naked, a group of people raise their hands to worship / Bridgeman Images

AVE6327071: United States, 1970s: Vehicles drive through the Golden Gate Bridge as fog fills the surrounding area / Bridgeman Images

AVE6327472: United States, 1950s: man polishes machine / Bridgeman Images

AVE6327517: United States, 1950s: animation of printing press machine / Bridgeman Images

AVE6327532: United States, 1970s: miners at shaft lift / Bridgeman Images

AVE6327541: Puerto Rico, 1960s: Boy and girl shake hands / Bridgeman Images

AVE6327547: Puerto Rico, 1960s: Fortress El Morro on the edge of the island / Bridgeman Images

AVE6327565: Puerto Rico, 1960s: Men walk down steps of government building lined with columns / Bridgeman Images

AVE6327580: United States, 1970s: man drives mine vehicle through shaft / Bridgeman Images

AVE6327616: United States, 1930s: Television antennas stand atop houses as actor Milton Berle acts / Bridgeman Images

AVE6327631: Germany, 1940s: A rocket prepares to launch in a testing facility / Bridgeman Images

AVE6327634: Germany, 1940s: A German rocket attempts to launch in 1943 / Bridgeman Images

AVE6327649: United States, 1950s: Low angle views of James Van Allen / Bridgeman Images

AVE6327709: United States, 1950s: Dr. Goddard, a pioneer in rocketry, attempts to test his parachute in a field / Bridgeman Images

AVE6327751: United States, 1990s: Photographs of galaxies / Bridgeman Images

AVE6327919: 1960s: Girl adjusts glassware with clamp / Bridgeman Images

AVE6327937: 1960s: Hand moves test tube in and out of flame / Bridgeman Images

AVE6324520: Helicopter Spraying Pesticides on Trees and Bushes / Bridgeman Images

AVE6327943: 1960s: Girl turns off water faucet / Bridgeman Images

AVE6327967: United States, 1950s: Rocket on launch pad at night / Bridgeman Images

AVE6324541: Scientist Mixes up Poison for Experiment / Bridgeman Images

AVE6328012: United States, 1950s: Two children walk along the rubble from the destruction caused by the German V2 rocket / Bridgeman Images

AVE6324571: Two Men with a Cow / Bridgeman Images

AVE6328066: United States, 1940s: Teenagers holding banner / Bridgeman Images

AVE6324619: 1910s: Schoolchildren run out of a burning building / Bridgeman Images

AVE6324634: 1910s: Man and woman greet each other on a porch / Bridgeman Images

AVE6324643: 1910s: A young couple sits together on a bench while the girl looks through a catalog / Bridgeman Images