Any suggestions on places or things to see blacksmithing related?

Disclaimer: never been there. I do know that there is a book on historic ironwork in Philly, but that would be about 60+ miles away. There is a sizable collection of buildings listed in the downtown Historic District. Some google suggestions:

http://www.historiclancasterwalkingtour.com/

http://www.oldindustry.org/PA_HTML/PaIron.html

I'm pretty sure that Landis Valley Museum has Conestoga wagon material.

I live in Lancaster Co. and Frank is right about Landis Valley Museum, they also have a forge. You should also go to Rough and Tumble they have a forge and I think they have something going on this weekend . This is there web addresses (landisvalleymuseum.org) & (roughandtumble.org) I hope you have fun. Jerry P.

I live about 30 minutes north for Lancaster, in Reading, PA. If you can make it up here go see the Gruber Wagon Works. Amazing shop and equipment, if you're into that sort of thing. Landis Valley is good, too.