Eastern Cougar "Extinction" - Some Key Points - Dr. L. Mark Elbroch
Cougar – International Society for Endangered Cats (ISEC) Canada
Eastern cougar declared extinct by US government - CSMonitor.com
Eastern puma declared extinct, 80 years after last confirmed sighting - The Wildlife Society
Cougar (Puma concolor) - JungleDragon
Cougar - Wikipedia
The 'Cougar Conundrum': Q&A with author Mark Elbroch
All Types of Cougars - Cougar Species and Subspecies with Photos
Local Mountain Lion Population Faces Precipitous Decline in Genetic Diversity Within 50 Years, Possible Extinction - Santa Monica Mountains National Recreation Area (U.S. National Park Service)
Mountain Lion | National Wildlife Federation
Eastern puma declared extinct––but did it ever really exist? - Animals 24-7
Extinct puma, cougar may never have existed in South Carolina
Are Mountain Lions Endangered? Conservation Status
Eastern Cougars Removed from Endangered Species List - Mountain Lion Foundation
This Isn't the End of the Eastern Cougar - Outside Online