There are many places in pa that sell them...not so sure about near the Jersey border.
Outfitters, off road shops, bike shops and book stores in my area have them.
There shipping is so quick for me that I order it today and get it tomorrow. I live near where they ship them...and it is cheaper to do that than drive to the Barnes and Noble in State Collage that sells them.
I strongly suggest getting more than one. Especially if getting Bald Eagle. Rothrock, Moshannon or Pine Creek...as they all connect.
I have all tbe PA ones but Ohiopyle and Michaux as I do not get to those areas.
I use them daily. I live right between Moshannon and Rothrock maps...i am in these forests usually weekly. I grew up here and live here...and learned so much about the area...just staring at the maps.