Your Pittsburghers (Pittsburghites?) have lots of regional songs and tunes to draw from. Robert Schmertz (I think I spelled that correctly) put out at least a few albums of really catchy new folk songs full of historical content for the city's Bicentennial in the 1950s, I think on the Folkways label. Some of those have even entered the tradition. Then there is the song collection of Jacob Evanson, documented in Korson's book and also on the Folkways LP "Folk Songs of Western Pennsylvania" sung by Vivian Richman. Add to that the fiddle tunes of Sarah Armstrong and others collected in southwestern PA by Bayard. I think Bayard got some ballads down that way as well.