I have a song book from 1931 and it has

My name is S.L at my store on Salem Street, that's where you'll buy your coats and vests and everything that's neat. I've second-handed ulsterettes and ev'rything that's fine for all the boys they trade with me at a hundred and forty-nine.

O S.L! Levi, tra la la la Poor S.L. Levi, tra la la, la la la etc

Then repeat from the top.