AVE6329037: United States, 1930s-1940s: An open hearth worker wearing a welding mask uses a long implement to churn a vat of molten metal / Bridgeman Images

AVE6329043: United States, 1930s-1940s: An oven door closes over an ingot / Bridgeman Images

AVE6329058: United States, 1930s-1940s: An electric control operator runs a white hot ingot through a rolling machine where it is flattened and cut into smaller rectangles / Bridgeman Images

AVE6329073: United States, 1930s-1940s: factory workers test the gauge of small engine parts / Bridgeman Images

AVE6329088: United States, 1930s-1940s: Factory worker affixes a final part to an engine block / Bridgeman Images

AVE6329124: 1940s: Boats on waterway / Bridgeman Images

AVE6329145: At sunrise, a farmer prepares to feed his animals / Bridgeman Images

AVE6329185: 1940s: Men empty net and throw net back into water / Bridgeman Images

AVE6329236: 1940s: Restaurant sign / Bridgeman Images

AVE6329302: UNITED STATES 1960s: Montage of images. / Bridgeman Images

AVE6329314: Hogan's Heros Promotion / Bridgeman Images

AVE6329329: Footage of the 1930s as Television is Introduced to America / Bridgeman Images

AVE6329341: 1950s: Illustrated atoms of copper, hydrogen and uranium with text / Bridgeman Images

AVE6329344: Television Exuctive Watches Programme Screening and Comments on it / Bridgeman Images

AVE6329347: Man at Podium Speaks to Audience / Bridgeman Images

AVE6329350: Man Speaking in Front of Microphones / Bridgeman Images

AVE6329383: Printing Press Printing Papers / Bridgeman Images

AVE6329184: 1940s: Men shovel oysters on boat / Bridgeman Images

AVE6329190: 1940s: Boats on water, Men pull nets out of water / Bridgeman Images

AVE6329196: A 1684-foot tower between Dallas and Fort Worth that broadcasts different channels / Bridgeman Images

AVE6329244: UNITED STATES 1960s: Tape reels / Man flips over negative. / Bridgeman Images

AVE6329256: 1970s: Car pulls over to child on the side of the road, opens door / Bridgeman Images

AVE6329274: UNITED STATES 1960s: Close up of woman / Hands hold plastic over text. / Bridgeman Images

AVE6329283: UNITED STATES 1960s: Hand press roller on picture, wipe of picture. / Bridgeman Images

AVE6329310: UNITED STATES 1960s: Montage of images. / Bridgeman Images

AVE6329325: Man on Stage Climbs Out of Sleigh / Bridgeman Images

AVE6329331: Birth Place of Television in America, 1939 / Bridgeman Images

AVE6329334: 1950s: Illustrated atom / Bridgeman Images

AVE6329340: Newsreader Reading the News to Camera / Bridgeman Images

AVE6329346: Television Executive Gives Talk to Audience About Objectivity / Bridgeman Images

AVE6329352: 1950s: Animated diagram of copper atoms / Bridgeman Images

AVE6329361: 1950s: Illustration of battery with wires and text / Bridgeman Images

AVE6329394: 1960s: Man tallies votes on television / Bridgeman Images

AVE6329397: 1950s: Wife walks to vanity table and sits / Bridgeman Images

AVE6329412: 1950s: Husband looks up and speaks / Bridgeman Images

AVE6329421: 1960s: Reporter interviews people on the street / Bridgeman Images