Lillian Roxon, Mother of Rock by Robert Milliken. Mint, used, $4.95. (I never saw a copy of this when it was new, would happily have purchased a copy then.)
I believe there are now three count-’em-three biographies about rock critics? (Not including former rock critics who became better known as musicians, i.e., Patti Smith.) Roxon, Paul Nelson, and Bangs — the only ones I know of anyway. Mother of Rock received almost no notices, at least in this part of the universe, when it was first published in 2002, so I’ve no idea if it’s any good or not. The index is fairly promising.