AVE6329069: United States, 1930s-1940s: A machine washes v8 engine pistons / Bridgeman Images

AVE6329074: United States, 1930s-1940s: A factory worker manufactures a car part using a manually operated machine / Bridgeman Images

AVE6329077: United States, 1930s-1940s: Car parts move along a hanging track in a Henry factory / Bridgeman Images

AVE6329083: United States, 1930s-1940s: A worker on an assembly line grabs an engine part off a track and places it into an engine block / Bridgeman Images

AVE6329084: United States, 1930s-1940s: A factory worker facets brackets to a engine block on a conveyor belt / Bridgeman Images

AVE6329085: United States, 1930s-1940s: A factory worker places large metal plates onto engine blocks moving down a conveyor belt / Bridgeman Images

AVE6329092: United States, 1930s-1940s: A factory worker affixes an engine part to a v8 engine block as it moves down a conveyor belt / Bridgeman Images

AVE6329103: United States, 1930s-1940s: factory workers move finished steel car frame pieces onto a conveyor belt / Bridgeman Images

AVE6329108: United States, 1930s-1940s: Two factory workers place the steel exterior of a car roof into a machine that perfects the exterior's shape / Bridgeman Images

AVE6321413: United States, 1940s: A woman in an apron removing eggs from chicken coop as a man faces her taking notes on a clipboard / Bridgeman Images

AVE6321416: United States, 1940s: Long shot of a row of factory workers candling eggs, then a close up of one factory worker candling eggs / Bridgeman Images

AVE6321418: United States, 1940s: Dairy worker closing the latch of a cylindrical butter churn, then turning the churn by a handle / Bridgeman Images

AVE6321425: United States, 1940s: A hose deposits milk into a large vat / Bridgeman Images

AVE6321436: United States, 1940s: Glass jars travel through a bottling machine on a conveyer belt to be filled with cottage cheese / Bridgeman Images

AVE6321441: United States, 1940s: Long shot, man walks through hallway / Bridgeman Images

AVE6321448: United States, 1940s: A man wearing a bow tie holds a half filled jar of milk in front of a boy wearing a plaid shirt / Bridgeman Images

AVE6321474: United States, 1940s: A man uses a pulley to lif a large metal container through a space in the floor of a dairy / Bridgeman Images

AVE6321475: United States, 1940s: A man empties a large block of ice from a metal container onto a chute / Bridgeman Images

AVE6321477: United States, 1940s: A milkman removes crates of dairy products from a parked milk delivery truck and stacks them onto a hand cart / Bridgeman Images

AVE6321483: United States, 1940s: a man holding a bucket of chicken feed spreads the feed on the ground as many chickes stream out of a coop to eat the feed / Bridgeman Images

AVE6321485: United States, 1940s: Two dairy workers using metal scoops bend over a vat full of cheese curds to create a ditch in the middle of the curds / Bridgeman Images

AVE6321487: United States, 1940s: Rows of glass jars on a conveyer belt move through a machine that fills each jar with cottage cheese, then caps the jars / Bridgeman Images

AVE6321488: United States, 1940s: View of planes on runway / Bridgeman Images

AVE6321494: United States, 1940s: A factory worker rinses a large metal bolt under a faucet, then a shot of a factory worker scrubbing a smaller bolt with a handheld brush / Bridgeman Images

AVE6321500: United States, 1940s: Aerial views of Trinity Test bomb site / Bridgeman Images

AVE6321504: United States, 1940s: Harry Truman giving speech / Bridgeman Images

AVE6321506: United States, 1940s: Harry Truman with Joseph Stalin / Bridgeman Images

AVE6321507: United States, 1940s: Exterior of Cecilianhof / Bridgeman Images

AVE6321518: Denmark Royal Family Have Photo Taken on Steps / Bridgeman Images

AVE6321520: Coronation Ceremony in Delhi, India / Bridgeman Images

AVE6321544: Romanov 300th anniversary, Dynasty Tour in Europe / Bridgeman Images

AVE6321552: Army Marches in Balkans / Bridgeman Images

AVE6321560: United States, 1970s: Extreme low angle of boy and girl, boy pours Lego pieces from box / Bridgeman Images

AVE6321561: United States, 1970s: Close up of pile of Lego pieces, boy and girl play on floor / Bridgeman Images

AVE6321564: United States, 1970s: Pills fall in slow motion, superimposed syringes and glue flash over image / Bridgeman Images

AVE6321565: United States, 1970s: Baby in crib / Bridgeman Images