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

AVE6327083: Berlin, 1936: Female athlete completes discus throw in slow motion, Olympic officials measure the distance / Bridgeman Images

AVE6327259: 1940s: Two men sit, look at dueling pistols, smile / Bridgeman Images

AVE6326409: United States, 1960s: audience listen to speaker's talk / Bridgeman Images

AVE6326424: United States, 1960s: tax legislation document / Bridgeman Images

AVE6326430: United States, 1960s: lady gives papers to man at desk / Bridgeman Images

AVE6326442: United States, 1960s: men feed cows on farm / Bridgeman Images

AVE6326451: United States, 1960s: men talk at counter / Bridgeman Images

AVE6326469: 1970s: Mail is automatically sorted by a machine at the post office / Bridgeman Images

AVE6326429: 1970s: A boy licks an envelope flap and closes it / Bridgeman Images

AVE6326432: United States, 1960s: lady pushes cart in grocery store / Bridgeman Images

AVE6326490: United States, 1960s: lady opens mail box in hedge / Bridgeman Images

AVE6326526: 1970s: Garbage can and man / Bridgeman Images

AVE6326532: 1970s: Garbage cans and lids in a row / Bridgeman Images

AVE6326495: United States, 1960s: boy with parcel walks towards building / Bridgeman Images

AVE6326353: United States, 1960s: Grenades thrown by police officers produce smoke use to confuse an angry mob / Bridgeman Images

AVE6326356: United States, 1960s: Rioters run away, confused, as tear gas strikes them / Bridgeman Images

AVE6326425: 1970s: A child writes a letter / Bridgeman Images

AVE6326428: United States, 1960s: man nods at agent and shakes hand / Bridgeman Images

AVE6326440: 1970s: Stylized animation / Bridgeman Images

AVE6326482: United States, 1960s: machines types on paper / Bridgeman Images

AVE6326485: United States, 1960s: boats on water / Bridgeman Images

AVE6326530: 1970s: Man lifts garbage can, carries to side of road / 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

AVE6327002: Egypt, 1970s: Ornate designs present in the pillars of an desolate ancient structure / Bridgeman Images

AVE6327008: Egypt, 1970s: A large sculpture of a pharaoh serves as the pillar of a temple in Egypt / 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

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

AVE6327122: United States, 1960s: beach in Cuba / Bridgeman Images

AVE6327149: United States, 1960s: President boards ship / Bridgeman Images