Katcina, also tell your friend to look for the Bluegrass Songbook edited by Peter Wernick.Oak Publcations, OK 63198 , ISBN 0.8256.0164.9.This book, also known as the Redbook, is a must for bluegrass jams.It is also a great history book.
While taking a quick look at it again for this post, I ran across a picture of Sam Bush, David Grisman,and Tony Rice together. My God they all looked like teenagers.
rr