No batteries, no electricity – I wonder how they did this…
(from America’s Best Comics # 23, 1947, with thanks to the many scanners)
No batteries, no electricity – I wonder how they did this…
(from America’s Best Comics # 23, 1947, with thanks to the many scanners)
That would have to be a crystal radio — they don’t need power, but they don’t amplify sound, either. See the reference to the “powerful crystal detector” and “built-in earphone.”
heh.