I was in Washington, D.C., as a chaperon for school kids and was asked for my phone number at a store. I didn't want to give it and the clerk said she had to have A NUMBER. So I gave her Pennsylvania 6- 5000. When she asked about the "Pennsylvania" I told her to put in 73 for the first 2 letters in the name. She did so very happily.
I guess she was too young to have heard the Big Band song using that number!