I know the Lackawanna Historical Society has city directories for Scranton because they did some research for me. May have others as well. As I remember, they charge $5 an hour for research plus copying fees if you need things like copies of old maps. Their address is The Catlin House, 232 Monroe Ave., Scranton, PA 28510, 570-344-3841. e-mail lhs@albright.org. They are not open Mondays. The researcher who helped me is a descendent of my grandfather's first wife whom I had never met - amazing.