AVE6324378: 1930s: Title card: Along Custer Battlefield Highway / Bridgeman Images

AVE6324387: United States: 1950s: men gather around emergency response desk. / Bridgeman Images

AVE6321996: Man Fells a Tree / Bridgeman Images

AVE6322017: United States, 1950s: man talking to another man, man bends down to pick up something, man walks away, workbench, close up of equipment / Bridgeman Images

AVE6322026: United States, 1950s: man busy at work, man approaches man in lab coat, 2 men talking / Bridgeman Images

AVE6322035: United States, 1950s: Man cuts into rubber tree / Bridgeman Images

AVE6322050: United States, 1950s: Men carry pallets of cotton candy / Bridgeman Images

AVE6322053: United States, 1950s: People exiting bus, Firestone plant in background / Bridgeman Images

AVE6322068: United States, 1950s: Audience in stands at circus / Bridgeman Images

AVE6322071: United States, 1950s: Clowns at circus, clown thrown into bag / Bridgeman Images

AVE6322077: United States, 1950s: Woman balances on her head on trapeze / Bridgeman Images

AVE6322120: 1940s: Fleets of fishing boats on a fjord / Bridgeman Images

AVE6322138: 1940s: Power windlass pulls fish and nets onto boat / Bridgeman Images

AVE6322144: 1940s: Flock of seagulls near boats / Bridgeman Images

AVE6322162: 1980s: A hand touches the nose of a model airplane / Bridgeman Images

AVE6322168: 1980s: Machine writes on graph paper / Bridgeman Images

AVE6322177: 1980s: A 1960s U.S Army aircraft demonstrates a vertical takeoff / Bridgeman Images

AVE6322198: USA, 1950s: Diagram showing flow of molecules inside an artificial respiration machine / Bridgeman Images

AVE6322201: 1980s: Computer model of an airplane spinning / Bridgeman Images

AVE6322231: 1980s: A child looks up / Bridgeman Images

AVE6322237: USA, 1950s: animation of effects of sensory perception of food on the stomach and brain / Bridgeman Images

AVE6322252: United States, 1940s: Furrows on Pasture Land / Bridgeman Images

AVE6321142: United States, 1970s: Protective measures to prevent theft as demonstrated by women / Bridgeman Images

AVE6321145: United States, 1970s: After a teller counts a man's money, he gives it back to her to be deposited / Bridgeman Images

AVE6321154: United States, 1970s: Children Find Metal Grate on Abandoned Industrial Site / Bridgeman Images

AVE6321160: United States, 1970s: Corrosion Experiment with Solution in the Lab / Bridgeman Images

AVE6321178: United States, 1970s: Equation Showing the Effects of Moisture and Air on the Rusting Process / Bridgeman Images

AVE6321184: United States, 1970s: Rusty Car Pulls Up on Driveway / Bridgeman Images

AVE6321187: United States, 1970s: Paint Flakes Off Rusty Car / Bridgeman Images

AVE6321193: United States, 1970s: Painting Over a Scratch to Prevent Metal Corrosion / Bridgeman Images

AVE6321196: United States, 1970s: Student Conducts Sacrificial Metal Demonstration in the Laboratory / Bridgeman Images

AVE6321199: United States, 1970s: Industrial Buildings Next to a River / Bridgeman Images

AVE6321205: United States, 1970s: Chemistry Student Takes Aluminium out of Glass Beaker / Bridgeman Images

AVE6321208: United States, 1970s: Buildings Suffer with Corroded Metals / Bridgeman Images

AVE6321254: United States, 1950s: Scientist working in laboratory with glass test tubes and Bunsen burner / Bridgeman Images

AVE6321314: 1960s: Man welds / Bridgeman Images