

Before Jenny, there was Pennsylvania 6-5000. From wiki:
“Many big band musicians played in Hotel Pennsylvania’s Cafe Rouge in New York City, including the Glenn Miller Orchestra. The hotel’s telephone number, Pennsylvania 6-5000, inspired the Glenn Miller 1940 Top 5 Billboard hit of the same name.”
And similarly, Transylvania 6-5000, which is where I first heard it.
A fairly poor quality YouTube link to the episode: https://youtu.be/4rQLnL9FRzI
It’s listed as S07E08 if you want to use the better quality link in the thread.