Banned Books Week for 2015 is celebrated September 27 - October 3, but in addition to the time sensitive events at this site from the American Library Association (ALA), there are plenty of year-round resources. The ALA's Office for Intellectual Freedom (OIF) collects data from U.S. libraries, schools, and the news media on books that have been challenged in some way and uses this information to inform the public about potential censorship efforts. On this site, visitors will find lists of Frequently Challenged Books going back to 1990, the year the ALA OIF started collecting data. Among these lists are the "top-10 most frequently challenged books of 2014," and a timeline celebrating 30 years of defending the right to read, complete with full-color replicas of book covers and the comments made about them. The timeline begins with Kurt Vonnegut's Slaughterhouse Five, 1982, and includes both popular and scholarly works such as JK Rowling's Harry Potter series, and Pedagogy of the Oppressed, by Paulo Freire. There's also a confidential form where anyone can report a challenge.