I can only go by Back to the Future, in 1955 marty's middle class ancestors are proud of their color TV, and scoff when marty says he's got 2 of em, "Nobody has

I can only go by Back to the Future, in 1955 marty's middle class ancestors are proud of their color TV, and scoff when marty says he's got 2 of em, "Nobody has two television sets." 1936 would have been the earliest TV broadcasts ever - the Berlin Olympics ! According to wiki the only viewers would have been in locations set up around the city just for the event. So now I am quite keen to find out what context these videos were meant to be watched EDIT: oh, it's in OPs link: "This short subject newsreel was shown in movie theaters the week before a town's or region's telephone exchange was to be converted to dial service. "