- The 100 Most Frequently Challenged Books by Decade (American Library Association)
- A Chronicle of Freedom of Expression (in Canada, 2001)
- EFF “Censorship – Canada” Archive 2003
- Forbidden Library: Banned and Challenged Books (Janet Yanosko)
- Free Expression in Canada (PEN)
- Free Expression Network Clearinghouse 2003
- Freedom of Expression Spotlight International Freedom of Expression eXchange (IFEX)
- Freedom to Read.ca
- The File Room
- Index Librorum Prohibitorum [Index of Prohibited Books]
- The Most Frequently Banned Books in the 1990s (Carnegie Mellon)
