Cool training film produced by Bell Labs in 1951 designed to teach people how to make long distance phone calls by direct dialing with an area code, something that was still a new concept at the time. Interestingly, Bell thought that a mere 80 area codes would be sufficient to cover the United States and Canada.
There is some interesting stuff in there about the history of the phone system and how it all began with manual switching and gradually evolved to automatic systems by the 1950s. It's pretty amazing that they were able to make all this stuff work at all in pre-computer days.
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