Where in Maine? Closer than you think. But, wait – that happened many years ago - 1981 to be exact! Well, apparently, a student challenged the ban and the case was taken to court and drew national attention.
You can read about the incident at these links.
http://www.nytimes.com/1981/06/26/books/vietnam-war-book-banned-in-maine.html
http://www.edweek.org/ew/articles/1982/02/02/01190105.h01.html