AVE6326399: United States, 1960s: skyscraper building / Bridgeman Images

AVE6326420: United States, 1960s: writing on legal document / Bridgeman Images

AVE6326441: United States, 1960s: machine prints pattern on paper / Bridgeman Images

AVE6326462: United States, 1960s: paper ashes / Bridgeman Images

AVE6326474: United States, 1960s: men sit around table in boardroom meeting / Bridgeman Images

AVE6326477: 1970s: Twenty dollar bill / Bridgeman Images

AVE6326480: United States, 1960s: man speaks on telephone / Bridgeman Images

AVE6326486: United States, 1960s: girl receives letter from lady / Bridgeman Images

AVE6326522: United States, 1960s: people sit in large meeting hall / Bridgeman Images

AVE6326413: United States, 1960s: people cross street by city buildings / Bridgeman Images

AVE6326458: United States, 1960s: lady behind glass speaks to man in car / Bridgeman Images

AVE6326470: United States, 1960s: man in car reaches through window / Bridgeman Images

AVE6326515: United States, 1960s: boy leaves bank building / Bridgeman Images

AVE6326524: 1970s: Garbage men pour trash bags into compactor / Bridgeman Images

AVE6326533: 1970s: Plastic garbage bins on side of road / Bridgeman Images

AVE6326536: 1970s: Piles of garbage, magazines, cans and umbrella handle interspersed between shaky image / Bridgeman Images

AVE6325713: United States, 1970s: Panning shot from control tower, plane takes off from runway / Bridgeman Images

AVE6325740: United States, 1970s: Teenage boys and girls with long hair get out of car on mountain overlook / Bridgeman Images

AVE6325758: United States, 1970s: Girl walks through woods toward an old car / Bridgeman Images

AVE6325768: 1950s: Conductor leads army men's chorus, Marian Anderson sings, stands in front by piano / Bridgeman Images

AVE6325868: 1940s: Patient lies on pillow breathing, falling unconscious with head tossing side to side after injection. / Bridgeman Images

AVE6326806: United States, 1960s: Man pours orange ink into the newspaper printing press to be used for printing. / Bridgeman Images

AVE6325901: United States, 1950s: boys in assembly at school / Bridgeman Images

AVE6326833: 1930s: UNITED STATES: side profile of bull with horns. / Bridgeman Images

AVE6325922: United States, 1940s: Couple in crowd applauds / 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

AVE6325973: United States, 1940s: Exterior of house / Bridgeman Images

AVE6319628: Ship Importing Textiles into the United States / Bridgeman Images

AVE6319664: Military Test Pilots Prepare for First Space Missions / Bridgeman Images

AVE6319682: Landing Gear on Plane as it Lands / Bridgeman Images

AVE6319694: 1918: President Wilson signs document, hands it off / Bridgeman Images

AVE6319757: 1969: Men in uniform face capitol building / Bridgeman Images

AVE6319767: Machines are used to prepare dough in a bakery / Bridgeman Images

AVE6319803: Bakers at work as frosting is placed on cake / Bridgeman Images

AVE6319818: 1970s hands adjust instruments on control panel in space capsule / Bridgeman Images