BOF6283825: Memorial Celebrations Fleet Week, Osprey tilt-rotor, 2011 / Bridgeman Images

BOF6283881: President Woodrow Wilson, 28th President of The United States from the start of World War I until his death in 1921 / Bridgeman Images

BOF6284100: 1944 Miss America Pageant / Bridgeman Images

BOF6284126: Time of Apollo, part 2 Apollo missions, ticker tape parade, Saturn V launch, astronauts having fun with zero gravity / Bridgeman Images

BOF6284241: 'President Kennedy: The Camelot Years - Vol.1' / Bridgeman Images

CMD6284254: Scenes of World War I / Bridgeman Images

CMD6284255: Germany in the 1940s / Bridgeman Images

DED6284256: Farm in Tarbert, Ireland, 1964 / Bridgeman Images

BOF6284263: chindits in Burma WWII / Bridgeman Images

BOF6284274: Princess Margaret, Hollywood, 1964 / Bridgeman Images

CMD6284292: Hyperinflation, Berlin 1920s / Bridgeman Images

AVE6320735: United States, 1950s: Farm equipment in field / Bridgeman Images

AVE6320741: United States, 1950s: Prisoners in train car, men close car / Bridgeman Images

AVE6320742: United States, 1950s: Army marches in Red Square / Bridgeman Images

AVE6320755: United States, 1950s: Soldiers fire gun / Bridgeman Images

AVE6320756: United States, 1950s: Sailors wave from ship, pan to sign on side of ship / Bridgeman Images

AVE6320759: United States, 1950s: Sailors train with ship gun / Bridgeman Images

AVE6320765: 1970s: Model of human brain flashes on black background / Bridgeman Images

AVE6320771: 1970s: Woman and girl at table / Bridgeman Images

AVE6320778: 1970s: Section of brain viewed through microscope / Bridgeman Images

AVE6320780: 1970s: Water with foggy horizon / Bridgeman Images

AVE6320790: 1970s: Squid swim around tank of water / Bridgeman Images

AVE6320793: 1970s: Drop of liquid falls from thing string / Bridgeman Images

AVE6320797: 1970s: Man looks down / Bridgeman Images

AVE6320798: 1970s: Flashes of light illuminate monkey in restraints / Bridgeman Images

AVE6320799: 1970s: Man stands / Bridgeman Images

AVE6320801: 1970s: Man sits / Bridgeman Images

AVE6320809: 1970s: Woman looks into isolette / Bridgeman Images

AVE6320811: 1970s: Hands hold premature baby in isolette / Bridgeman Images

AVE6320821: 1970s: Man leans down / Bridgeman Images

AVE6320826: 1970s: Boy smiles / Bridgeman Images

AVE6320833: 1950s: Man in suit and hands walks down nighttime sidewalk with hands in pockets / Bridgeman Images

AVE6320834: 1950s: Man stops in front of house and gestures at entrance / Bridgeman Images

AVE6320836: 1960s: Man sings in front of microphone while holding sheet music / Bridgeman Images

AVE6320840: 1950s: Girl wakes up in oversized, cartoon version of the study / Bridgeman Images

AVE6320847: 1950s: Little girl stands on oversized book / Bridgeman Images