* 1924 , Popular Science (volume 105, number 5, November 1924, page 70)
* 1986 , Billboard (volume 98, number 6, 8 February 1986, page 18)
- One of the most recent devices for use in communication between deaf mutes is a "talkless phone" that conveys messages by means of an alphabet printed on electric-light bulbs.
- The talkless 24-hour period was devoid of advertisements, record intros and all other spoken words.
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