AVE6327164: United States, 1960s: President Kennedy signs quarantine order / Bridgeman Images

AVE6327179: United States, 1960s: communications equipment on table / Bridgeman Images

AVE6327182: United States, 1950s: man skis down hill / Bridgeman Images

AVE6327188: United States, 1940s: Long shot of downtown Honolulu / Bridgeman Images

AVE6326908: 1930s: Workers in a factory / Bridgeman Images

AVE6326923: United States, 1950s: Acropolis in Italy / Bridgeman Images

AVE6326947: United States, 1960s: trees outside building / Bridgeman Images

AVE6326998: Egypt, 1970s: Camel riders pass by each other en route to their destination / Bridgeman Images

AVE6327016: Egypt, 1970s: The Sphinx guards the pyramid behind it as pharaohs stand guard at a pyramid / Bridgeman Images

AVE6327019: United States, 1970s: A priest prays with a candle / Bridgeman Images

AVE6327061: United States, 1970s: Altars featuring different symbols and items of worship / Bridgeman Images

AVE6327067: United States, 1970s: A woman in a black robe walks slowly through the woods / Bridgeman Images

AVE6327094: Berlin, 1936: Athletes compete in a running marathon / Bridgeman Images

AVE6327109: United States, 1960s: trees on hill slope / Bridgeman Images

AVE6327112: United States, 1960s: Columbus Day parade in street / Bridgeman Images

AVE6327133: United States, 1960s: men look out at ship on ocean / Bridgeman Images

AVE6327151: United States, 1960s: Soviet Minister speaks to American President / Bridgeman Images

AVE6327160: United States, 1960s: empty shelves / Bridgeman Images

AVE6327216: 1940s: Man sits at desk, writes letter, puts pen away / Bridgeman Images

AVE6327219: United States, 1940s: View of planes flying overhead / Bridgeman Images

AVE6327270: United States, 1940s: Low angle view of radar antenna / Bridgeman Images

AVE6327279: United States, 1940s: Planes fly over field, firing / Bridgeman Images

AVE6327297: United States, 1940s: Japanese plane dives / Bridgeman Images

AVE6327315: United States, 1940s: Truck brings injured to aid workers / Bridgeman Images

AVE6327321: United States, 1940s: Japanese flags on side of building / Bridgeman Images

AVE6327421: 1950s: Reenacted George Washington signs document by candlelight / Bridgeman Images

AVE6327433: 1910s: Woodrow Wilson signs papers / Bridgeman Images

AVE6329039: United States, 1930s-1940s: An open hearth worker places a lid on top of a large vat of molten metal / Bridgeman Images

AVE6329057: United States, 1930s-1940s: A crane arm lifts a white hot ingot out of an open hearth furnace and places it in the top of a rolling machine / Bridgeman Images

AVE6329069: United States, 1930s-1940s: A machine washes v8 engine pistons / Bridgeman Images

AVE6329084: United States, 1930s-1940s: A factory worker facets brackets to a engine block on a conveyor belt / Bridgeman Images

AVE6329108: United States, 1930s-1940s: Two factory workers place the steel exterior of a car roof into a machine that perfects the exterior's shape / Bridgeman Images

AVE6329144: 1940s: Men work on boat / Bridgeman Images

AVE6329204: 1940s: Boats on water / Bridgeman Images

AVE6329240: 1940s: People eat at table / Bridgeman Images

AVE6329246: UNITED STATES 1960s: Woman's face / View of knob. / Bridgeman Images