AVE6322418: United States, 1970s: Young man is scolded by businessman in front of graffitied wall / Bridgeman Images

AVE6322420: United States, 1970s: Various shots of graffiti and vandalism in a city / Bridgeman Images

AVE6322424: United States, 1970s: Graffiti covered walls of metro station, subway traveling down tracks, man walking down stairway covered in graffiti / Bridgeman Images

AVE6322426: United States, 1970s: People standing in line near a ticket booth, then a shot of the exterior of a building which is covered in graffiti / Bridgeman Images

AVE6322429: United States, 1970s: Graffitied trolley drives away, a worker paints over wall graffiti / Bridgeman Images

AVE6322436: United States, 1970s: Animation of some graffitied slogans, young man begins cleaning graffiti off of wall / Bridgeman Images

AVE6322454: United States, 1970s: Young man paints on canvas at desk, then talks to two other students about a painting hanging on the wall / Bridgeman Images

AVE6322461: United States, 1970s: Young man spray painting a wall, a person rolls up their sleeve to reveal a tattoo / Bridgeman Images

AVE6322468: United States, 1980s:lady looks down microscope / Bridgeman Images

AVE6322469: United States, 1950s: Zoom in on orchestra playing / Bridgeman Images

AVE6322470: United States, 1980s: NASA astronauts in classroom learn about biology experiments / Bridgeman Images

AVE6322474: United States, 1980s: NASA researchers test experiments on earth / Bridgeman Images

AVE6322476: United States, 1980s:NASA astronauts wave at camera / Bridgeman Images

AVE6322485: United States, 1980s:astronauts carry out tasks on space station / Bridgeman Images

AVE6322486: United States, 1980s:animation of female astronaut / Bridgeman Images

AVE6322487: United States, 1950s: Close up, hands playing cello / Bridgeman Images

AVE6322490: United States, 1980s:astronauts on space walk / Bridgeman Images

AVE6322492: United States, 1980s:computer model shows impacts of gravity on human brain / Bridgeman Images

AVE6322502: United States, 1980s:scientists prepare experiments for astronauts in space / Bridgeman Images

AVE6322503: United States, 1950s: Jet taking off / Bridgeman Images

AVE6322507: United States, 1950s: View of audience / Bridgeman Images

AVE6322519: United States, 1980s:lady looks at plant cells on growth plate / Bridgeman Images

AVE6322783: Children talk while riding down street on bicycles, zoom in on wheel / Bridgeman Images

AVE6322786: Boy sharpens pencil, boys pull rope down / Bridgeman Images

AVE6320983: 1960s: Man in glasses smiles and sings to self / Bridgeman Images

AVE6320986: 1960s: Duke Ellington listens / Bridgeman Images

AVE6320991: 1960s: Girls flip through record albums at music store / Bridgeman Images

AVE6320994: 1960s: Vocalist sings into microphone and reads music / Bridgeman Images

AVE6320998: 1960s: Conductor points to singer / Bridgeman Images

AVE6321051: 1950s: Long shot of wagon train traveling across prairie / Bridgeman Images

AVE6321052: 1950s: Wagon wheels in grass / Bridgeman Images

AVE6321057: 1950s: Girl riding in back of wagon with doll / Bridgeman Images

AVE6321064: 1950s: Woman and boy riding in wagon / Bridgeman Images

AVE6321065: 1950s: Horse hooves, wagon wheels move through puddle / Bridgeman Images

AVE6321067: 1950s: Mother and children ride on covered wagon / Bridgeman Images

AVE6321072: 1950s: Young man rides horse / Bridgeman Images