In my opinion, you shouldn't really be looking for bootleg copies of sheet music, unless you have permission. CGR has lots of chords, including the ones to most of the artists you were looking for. If you can read music, you can improv using chords with practice. If you don't have time (you better not just be too lazy) to practice this stuff, e-mail me and maybe I can hammer out a few songs on my music-writing program real quick. The best, most satisfying incredible thing is when you find out you don't need sheet music in front of you in order to play.
In Christ,
JamZ