Hey M. Ted:

I haven't found the specific piece, but since you are in D.C. one good place to look is the Sam DeVincent Sheet Music Collection in the archives of the Smithsonian American History Museum. DeVincent collected over 130,000 pieces of sheet music. Less than half have been catalouged and are searchable on-line. He did have a box of pieces about urban transportation from trolleys to the El. Here is the link:

http://americanhistory.si.edu/archives/d5300fh8.htm

You have to make an appointment and go down to the museum to actually see what was in the box. They are really really helpful however, and they even let you make up to 10 copies for free!. I just found out about it, and can't wait to get some time to explore the box that they have on Ukulele and Ukulele Instruction (not yet online).

JAB