Animation-Writer.Com
Animation writing resources with recommended links on sample scripts, classes, articles and interviews, books and software, and writer homepages.

Gore & Lombard
Official site of cartoon writers Evan Gore and Heather Lombard.

Howard Beckerman: Animation, the Whole Story
Book authored by veteran animator and animation historian offering history of animation and detailed how-to guide for creating animation productions, including story writing.

Suite 101: Animation Writing and Production
Insight and advice into writing and working at non-artist jobs in animation by Shannon Muir, an industry professional. Includes articles archive.