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March 20, 2017 permalink
A nice 30-minute radio documentary on famous phone phreaker Josef Carl Engressia, aka Joybubbles, with audio from his “Stories & Stuff” call-in recordings and interviews featuring John “Captain Crunch” Draper and “Jack the Ripper.”
February 20, 2011 permalink
From a 1950 issue of Popular Science, an ad featuring Bell Lab’s early multi-frequency signaling keyboard for connecting long distance phone calls, in the era just before DTMF dialtones were introduced to America’s households.
(Via the always-interesting History of Phone Phreaking blog, which links to a couple of other good vintage Bell Labs ads)