The American Library Association's Office for Intellectual Freedom is a gold mine for publications, tips, and training related to intellectual freedom challenges. This is a great faculty resource!
The American Library Association's official outreach site for promoting Banned Books Week.
Illinois Library Association (ILA) site that showcases books that have been banned from 1999-2016. Includes a downloadable PDF report of hundreds of books and the reasons for their bans and challenges.
Various videos of people reading their favorite banned books aloud.
Information site about banned books maintained by the Banned Books Coalition
The Comic Book Legal Defense Fund maintains information about banned and challenged graphic novels and comics.
ALA-run site dedicated to showcasing information about frequently challenged books from 2005 to the present.
University of Pennsylvania Library maintains an online exhibit select banned books and summaries.