Here's the link to a comprehensive website all about him. Has all his songs/chords/lyrics in alphabetical order and by album...
http://www.jpshrine.org
BTW, last week I was playing some tunes for my beautiful wife...I had recently learned Angel From Montgomery and she started singing along under her breath...I had no idea she knew it; she doesn't have a clue who JP is...now I got to get her to start doing it w/me...