A few days before he died a book of his songs was published. He also made a DVD with others. See the March 2010 Folknik
http://www.sffmc.org/archives/mar10/folknik.html
and the March '06 Folknik for a description of the DVD
http://www.sffmc.org/archives/mar06/clubnews.html
I have the book and DVD somewhere, and the SF Folk Music Club still sells the book.
Debbie