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Did You Know? Thomas Edison proposed to his second wife via Morse Code (he’d previously taught her how to communicate using it so that they could talk secretly in the presence of her family).
Bearcat IV scanner page 01, a photo by cjp02 on Flickr. Via Flickr: This is the operating instruction booklet for the Bearcat IV scanner made by the Electra division of Masco. It dates from 1973.