One time, I asked Pete Seeger whether he was aware that "Officer Crumpke," from West Side Story is essentially the same melody as his song that I call the "Geezer's Song"--

"How do I know my youth is all spent?
My get up and go has got up and went.
In spite of it all, I'm able to grin
When I think of the places my get up has been."

His response was to the effect that both songs were probably descended from "Fair Harvard," as both he and Lennie were in attendance at about the same time.