American Museum of Natural History: www.amnh.org
California Turtle & Tortoise Club: www.tortoise.org
Caribbean Conservation Corporation: www.cccturtle.org
Charles Darwin Research Center: www.darwinfoundation.org
Chelonian Research Foundation: www.chelonian.org
Happy Hollow Park And Zoo: sjliving.com/happyhollow/website
The Mid-Atlantic Turtle and Tortoise Society: matts.herptiles.com
The New York Herpetological Society: www.nyhs.org
Nova Scotia Museum of Natural History: www.ednet.ns.ca/educ/museum/mnh/index.htm
Savannah River Ecology Laboratory: www.uga.edu/srelherp
Tortoise Trust: www.tortoisetrust.org
Tortuga Gazette: www.tortoise.org/archives/chrysemy.html
University of California at Berkeley Digital Library Project: elib.cs.berkeley.edu/photos/fauna