A rusted sign reveals an alphanumeric telephone exchange on St. Nicholas Avenue and West 147th in Harlem. TR can stand for a number of things, but as this handy dandy list shows, here it was TRafalgar.
CALLING HARLEM

A rusted sign reveals an alphanumeric telephone exchange on St. Nicholas Avenue and West 147th in Harlem. TR can stand for a number of things, but as this handy dandy list shows, here it was TRafalgar.