Thanks to keepingitrandom:
“I have a copy of that book, Folk-Rock: the Bob Dylan story.
“It is a paperback book written in an almost fanzine style... although, unlike Zimmerman Blues which I also have & which was published in the '70's, the text repeats early b.s. like the liner notes on his first album... carnivals, Gallup, New Mexico, etc... a few interesting photos... the general tone pretty flighty... interesting for its time...”