3 links
The Garbage Pail Kids
geocities.com
Complete GPK reference site. See images of cards, memorabilia section, and picture/site of the month.
The Garbage Pail Kids Fanatic
mike_sawl.tripod.com
Offers downloadable card lists and a for sale and trade section.
Wayne's Garbage Pail Kids References
gpkr.com
Provides downloadable card variation checklists, price guide, and FAQ.