Guinea Pigs: An Owner's Guide to Choosing, Breeding and Showing. By: Harriet Rubins (New York).  Available through the Ontario Cavy Club On-Line Store.

Cavy Genetics. By: Harry Claus (Pennsylvania).  Available through the American Cavy Breeders Association.

Pig Out Cookbook. collection of delicious recipes from the Members of ACBA. [Available through the American Cavy Breeders Association].

Shopping via Amazon - Very good reading material for Guinea enthusiasts.