I heard this song on a T.V.documentary about the building of the Empire State Building. The Mayor of New York at the time sang it in the documentary. Exceptionally well, too! It was his favourite song.
I remember a few lines and I'll post them below. Does anyone know the words to the rest of the song or have any other info, on it?
It's such a marvellous tune!

               Boys and girls together
               Me and Molly O'Rourke
               We tripped the light fantastic
               On the sidewalks of New York