If you'e looking for the book you might try WUMB, Folk Radio in Boston, a PBS station. They had a reissue done last year to give as premiums in a fund drive - autographed by Eric. They might have some copies left over in exchange for a donation. Their number is 617-287-6900.
The book is awesome. So many pics and comments from the people who made it happen in Cambridge and Boston.
Jack Murray