If you plan on fishing in Pennsylvania, you’ll need a PA Fishing License. They’re not expensive, but you do need to plan in advance because it takes about 7-10 business days to arrive by mail.

http://gonefishingpa.com/
http://fishandboat.com/

 

There is also some good info here on places to fish in the area:

http://www.fishandboat.com/Fish/Fishing/Pages/default.aspx