I keep getting phone books and the Yellow Pages dropped in front of my door and I keep throwing them out. Who needs a phone book anymore? Most people I know primarily use a cell phone and wouldn’t be listed in the local phone book anyway. So it’s funny to think that there was a time when people had to learn how to dial their own phone. This short film from the early 1950’s was created by AT&T to show the public how to use a rotary phone. Such helpful words of wisdom include “When you want to make a call always be sure you have the right number.”
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On the phone, the number zero serves a dual purpose as O for Operator, and the number zero. It's versatile, and something you really much about once you learn it. I suppose younger people don't think about it being O for Operator, since the Operator is headed to being O for Obsolete.