While doing a little research on non-profit organizations listed with the Better Business Bureau - I happened upon The Elephant Sanctuary in Hohenwald Tennessee.
"The Elephant Sanctuary in Hohenwald, Tennessee, is the nation's largest natural-habitat refuge developed specifically to meet the needs of endangered elephants. It is a non-profit organization, licensed by the U.S. Department of Agriculture and the Tennessee Wildlife Resources Agency, and accredited by the Association of Sanctuaries, designed specifically for old, sick or needy elephants who have been retired from zoos and circuses. Utilizing more than 2700 acres, it provides three separate and protected, natural-habitat environments for Asian and African elephants. Our residents are not required to perform or entertain for the public; instead, they are encouraged to live like elephants."