This Time article on Sarah Palin mentions that:
Stein says that as mayor, Palin continued to inject religious beliefs into her policy at times. “She asked the library how she could go about banning books,” he says, because some voters thought they had inappropriate language in them. “The librarian was aghast.” That woman, Mary Ellen Baker, couldn’t be reached for comment, but news reports from the time show that Palin had threatened to fire Baker for not giving “full support” to the mayor.
Which begs the question, why are people still trying to ban books? If 27% of people don’t read at all in a given year and most read less than 5, then they must be very, very frightened of those of us who do. We must be a very powerful, involved part of the electorate.