A Clok-Trola, an early form of clock radio. The radio was set with switches around the dial, each of which turned on the radio for 20 minutes. In this view Miss Harma Christie is holding the device. Photo date: March 1, 1932.
Christie, Harma Inventions--California--Los Angeles Clock radios--California--Los Angeles Radio--Receivers and reception Electric apparatus and appliances--California--Los Angeles
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