The Ultimate Rugrats Fan Book is a non-fiction book about Rugrats, published in 1998, shortly before the release of The Rugrats Movie. It contains full details of the series, including four chapter devoted to the following topics:
The history of how the show was made, and its rise to popularity
Profiles of each of the characters, with short bios of their voice actors
A behind-the-scenes look at how the episodes are made
A episode guide for all the episodes up to "The Family Tree", listed in production order
The 1999 reprint by Grolier Enterprises expanded the episode guide chapter to include all the episodes up to "Runaway Reptar". However, no revisions have been made to the book since then.