Review links from your group.
1. Wikipedia Article on Calicos/Torties
It looks like they only have an article on Torties...not calicos in general, but still some good information.
2. Calicos Are Maryland's State Cat
Yay! Calicos have been Maryland's State Cat since 2001!
3. Cat Fanciers: Torties, Calicos and Tricolor Cats
Some scientific/genetic info on calicos and other tri-colored cats.