AVE8861756: Mexico 1950s: Four men dressed in a hat and a serape, wearing identical masks. One plays a small guitar. The other three hold canes and dance. / Bridgeman Images

AVE8861758: 1950s: Detail from "The Progress Of Love: The Pursuit" by Jean-Honoré Fragonard; A garden. Young man extends a flower to a young woman on a balcony. Another young woman tends a child. / Bridgeman Images

AVE8861766: Mexico 1950s: Man sits on a horse in a lane between two buildings. Two children walk near the man. Two woman approach a donkey and start to take off baskets. / Bridgeman Images

AVE8861768: Mexico 1950s: Man sits and smiles on a flat bottomed boat. He sits under an arch with "PAULITA" in yellow letters. / Bridgeman Images

AVE8861772: Mexico 1950s: Two men play a version of hand tennis: they stand on a court and one man catches and returns a ball over a tall net. Two men row in a scull along the lake shore. A boy steers. / Bridgeman Images

AVE8861775: Mexico 1950s: Man and woman ride in a flat bottomed boat on a shallow river. "OFELIA" in yellow flowers adorns the arch over their heads. / Bridgeman Images

AVE8890880: A person points to a piece of wood with a pencil. / Bridgeman Images

AVE8890885: 1960s: Portrait of the Governor General of British North America, John George Lambton. / Bridgeman Images

AVE8890888: 1960s: An engraving of Quebec City from across the river. / Bridgeman Images

AVE8890889: Paraguay 1970s: Paraguay state seal on the Cabildo, parliamentary building in Asuncion. / Bridgeman Images

AVE8890892: Children walk through field of wildflowers. / Bridgeman Images

AVE8890903: 1970s: Woman in a bakery stacks muffins on a tray. / Bridgeman Images

AVE8890910: 1970s: Man stops a hand truck filled with beer. Someone unloads more flats of beer. The man loads them onto the hand truck. / Bridgeman Images

AVE8890912: 1960s: Man sits in band with reed in mouth, places reed in in oboe and begins playing. / Bridgeman Images

AVE8890913: 1960s: Military band, in uniform, plays music with conductor. / Bridgeman Images

AVE8890915: 1960s: Woman lifts up flute to mouth and plays, then lowers the flute. / Bridgeman Images

AVE8890917: 1960s: Military band, in uniform, plays music. / Bridgeman Images

AVE8890919: 1960s: Snake slithers across rocks and sand in arid garden. / Bridgeman Images

AVE8890920: 1960s: Men in orchestra play bassoons. / Bridgeman Images

AVE8890922: Person points out white strands of fungus with a pencil. / Bridgeman Images

AVE8890925: 1960s: Caterpillar eats leaf. / Bridgeman Images

AVE8890928: 1960s: Worker drives construction vehicle over road under construction near farm field. / Bridgeman Images

AVE8890932: A person points to a piece of wood with a pencil. / Bridgeman Images

AVE8890933: 1960s: Monarch butterflies crawl on large pink flowers. / Bridgeman Images

AVE8890949: 1960s: Viola, violin, cello and harp. / Bridgeman Images

AVE8890950: 1960s: Man sits at concert piano. Hands raise and play keys on concert piano. / Bridgeman Images

AVE8890955: 1960s: Man uses bow on upright bass then plucks strings of bass. / Bridgeman Images

AVE8890961: 1960s: Woman plays violin. / Bridgeman Images

AVE8890966: 1960s: Woman holds bow then begins playing cello in orchestra. / Bridgeman Images

AVE8890968: 1960s: Wind section in orchestra plays. / Bridgeman Images

AVE8890386: 1960s: A model of the human inner ear. Pointer touches the cochlea and semicircular canals. Hand places a label "Cochlea". Pointer traces the vestibular nerve. Label on "Semicircular canals". / Bridgeman Images

AVE8890390: Kettle on stove, hand picks up kettle, zoom in on burner. / Bridgeman Images

AVE8890391: Hands attach wire to battery, fan spinning on table, girl leans down to fan. / Bridgeman Images

AVE8890393: Neon signs, traffic on street at night. / Bridgeman Images

AVE8890394: Men working at adding machines. / Bridgeman Images

AVE8890402: Hand sets magnet on stand, rotates magnet with other magnet. / Bridgeman Images