AVE6328735: United States, 1980s: car towed on track / Bridgeman Images

AVE6328738: United States, 1960s: man directs traffic / Bridgeman Images

AVE6328739: United States, 1980s: man welds metal in lab / Bridgeman Images

AVE6328742: United States, 1960s: people cross road in city / Bridgeman Images

AVE6328743: United States, 1980s: tyre pressure testing in lab / Bridgeman Images

AVE6328750: 1920s: Woman climbs into airplane cockpit / Bridgeman Images

AVE6328756: 1920s: Under a Welcome Home sign, a large crowd marches down street / Bridgeman Images

AVE6328768: 1920s: Two women dance on top of smokestack / Bridgeman Images

AVE6328770: United States, 1960s: man drives along expressway / Bridgeman Images

AVE6328772: 1920s: Group of people clamor outside department store for sale / Bridgeman Images

AVE6328775: 1920s: People riding fake horses for ride at carnival / Bridgeman Images

AVE6328776: 1920s: Young girls dance in unison / Bridgeman Images

AVE6328780: United States, 1960s: boat sprays water / Bridgeman Images

AVE6328791: 1920s: Man and woman dance in grass as people watch / Bridgeman Images

AVE6327394: United States, 1950s: View of car's wheel as it drives along rough track / Bridgeman Images

AVE6327397: United States, 1950s: Car driving along a dirt track / Bridgeman Images

AVE6327398: United States, 1950s: Drawing of lady crossing road at junction as car approaches on a rainy day / Bridgeman Images

AVE6327400: United States, 1950s: Speeding car drives around a bend in road / Bridgeman Images

AVE6327401: United States, 1950s: Drawing of a car on a bend as it adjusts wheel position / Bridgeman Images

AVE6327406: United States, 1950s: Close up of man's face as he drives car / Bridgeman Images

AVE6327409: United States, 1950s: Car drives along street behind a cyclist on a bike / Bridgeman Images

AVE6327412: United States, 1950s: Cars driving along road a night / Bridgeman Images

AVE6327417: 1950s: Actor playing George Washington swears over Bible / Bridgeman Images

AVE6327420: 1950s: Reenacted Thomas Jefferson and George Washington debate in convention hall with other Founding Fathers / Bridgeman Images

AVE6327435: United States, 1950s: workers in printing press factory / Bridgeman Images

AVE6327436: 1910s: Soldiers march down city street / Bridgeman Images

AVE6327439: United States, 1950s: printed words on paper / Bridgeman Images

AVE6327440: United States, 1950s: printed words on paper / Bridgeman Images

AVE6327442: United States, 1950s: printing machine at work / Bridgeman Images

AVE6327453: United States, 1950s: man carves printing sheet / Bridgeman Images

AVE6327468: 1950s: Airplane flies over landscape, Washington Monument / Bridgeman Images

AVE6327470: United States, 1950s: Lady talks to man in office / Bridgeman Images

AVE6327473: United States, 1950s: Man and lady at office desk / Bridgeman Images

AVE6327476: United States, 1950s: man works at desk / Bridgeman Images

AVE6327477: United States, 1950s: man works at machine / Bridgeman Images

AVE6327481: 1950s: Man in suit and tie gets up from desk, speaks at window / Bridgeman Images