AVE6329225: 1940s: Man shovels pile of material / Bridgeman Images

AVE6329226: 1940s: Hand shovels material / Bridgeman Images

AVE6329245: UNITED STATES 1960s: View of switch / Hand presses button. / Bridgeman Images

AVE6329257: UNITED STATES 1960s: Hands put paper on roller / Waves on screen. / Bridgeman Images

AVE6329260: 1970s: Girl walks along side of road, over bridge / Bridgeman Images

AVE6329262: UNITED STATES 1960s: Man in darkroom, tilts photos under glass. / Bridgeman Images

AVE6329263: UNITED STATES 1960s: Light shines onto screen. / Bridgeman Images

AVE6329290: UNITED STATES 1960s: Views of paper moving through printer. / Bridgeman Images

AVE6329291: 1950s: People in costume hold string in barn / Bridgeman Images

AVE6329292: UNITED STATES 1960s: Panning shot of men in office. / Bridgeman Images

AVE6329301: 1950s: Hand touches wire to bell jar lid / Bridgeman Images

AVE6329311: NBC Week Trailer / Bridgeman Images

AVE6329313: NET Introduction Credits / Bridgeman Images

AVE6329318: Boston Gold, Television Critic Percy Shane on Typewriter / Bridgeman Images

AVE6329322: Man With Cigar Adjust Television Monitor / Bridgeman Images

AVE6329323: Lady Ironing in Front of Television / Bridgeman Images

AVE6329332: 1950s: Animated electrons swirl and spin around the nucleus of an atom / Bridgeman Images

AVE6329336: Men Walking Along Street with Briefcases / Bridgeman Images

AVE6329337: 1950s: Illustrated hydrogen atom / Bridgeman Images

AVE6329353: NBC News HQ at Night Time / Bridgeman Images

AVE6329354: Machine Monitoring Viewing Habits of Television Audience / Bridgeman Images

AVE6329355: Man Speaking to Television Camera / Bridgeman Images

AVE6329362: Film Crew Working on a Take at Paramount Studios / Bridgeman Images

AVE6329367: 1950s: Illustration of copper atom with text / Bridgeman Images

AVE6329368: Birds in Front of New York Buildings / Bridgeman Images

AVE6329369: Man Walks into Music Critic's Office / Bridgeman Images

AVE6329375: Man Walks Past Antiques Shop in London Street / Bridgeman Images

AVE6329384: Viewers Watch Television from Comfort of their Home / Bridgeman Images

AVE6329385: Man in Rocking Chair Watches Television Show / Bridgeman Images

AVE6329389: 1950s: Wife lies on bed / Bridgeman Images

AVE6329396: 1950s: Wife walks to vanity table / Bridgeman Images

AVE6327901: America, c.1990s: Medium close up: Astronaut in space receives telecom instruction while installing capture bar on satellite / Bridgeman Images

AVE6327902: 1960s: Students leave desks / Bridgeman Images

AVE6327903: 1960s: Boy gathers glassware in arms / Bridgeman Images

AVE6327904: 1960s: Girl dons hair net / Bridgeman Images

AVE6327913: America, c.1990s: Video from inside space shuttle Endeavour of satellite in orbit / Bridgeman Images