U.S. Fish and Wildlife Service - In depth information on efforts on the Mexican Wolf Recovery Program.
International Wolf Center - Information about wolf reintroduction efforts nationwide.
Reintroduction of the Wolf into the Southwest U.S - A thorough presentation of the Mexican Wolf Recovery Program debate
Wolf Sanctuary - Information about the Wild Canine Survival and Research Center.
Draft Environmental Impact Statement - Summary for the reintroduction of the Mexican Wolf
Extreme Zone - General information and track sketches.