IMDb: Christopher Ralph - Christopher's listing at the Internet Movie Database. Contains links and a brief filmography. us.imdb.com/Name?Ralph,+Christopher
Scholastic: Behind the Scenes - Interview with Christopher and a chat transcript. www.scholastic.com/animorphs/characters/yearbook_tobias.htm
The Christopher Ralph Website - Fan site with information, downloads, multimedia, and news. johto.hispeed.com/chris/index.html
Yahoo!Groups: christopher-ralph - Newsletter sent out weekly with information about the actor. groups.yahoo.com/group/christopher-ralph
