This final installment of "Reel Rare: Found Films from Old KC" explores another technological wonder of the 1920s--radio. Footage from the Sterling Radio Co. may even help explain the who and why ...

Entertainment broadcasting began in about 1910, and included De Forest's own program ... became the first commercial radio station, KDKA, in 1920. The station WWJ, in Detroit, Michigan, also ...

Radio companies formed to build and sell ready-made machines. In 1920, Westinghouse, one of the leading radio manufacturers, had an idea for selling more radios: It would offer programming.