There's a fair amount on Ms. Hester in "Positively 4th Street," the gossipy but fascinating (to me) account of personal tales from the sixties folk boom by David Hajdu.
For trivia buffs, the Stacey Williams who wrote the liner notes on Hester's Tradition album was actually the late Robert Shelton. He was then a music critic for the New York Times who earned extra cash writing notes. Of course, in the newspaper he'd review the same artists whom he praised on album jackets, hence the need for a liner note pseudonym. He wrote a glowing Times review of a 1961 Dylan club performance that many still credit with jump-starting Dylan's career. He later published the Dylan biography No Direction Home.