I've been to PSI in the past but where are the UNIQUE places for a turner to visit? I will be between Lancaster and Philly so even Northern Delaware is not out of the question for that unique location.
Groff & Groff Lumber is in Quarryville, which is just southeast of Lancaster. Hearne Hardwoods is in Oxford which is a little further southeast of Quarryville. Both have a wide selection of domestic and exotic woods. If you only have time to hit one, go to Hearne...they're huge!