An August 26, 2009 letter included the Central New Mexico Audubon Society, Champaign County Audubon Society, Delaware Audubon Society, Elisha Mitchell Audubon Society, Huachuca Audubon Society, Kalmiopsis Audubon Society, San Bernardino Valley Audubon Society, Sequoia Audubon Society, and Audubon South Carolina.
Подробнее здесь* Frank Graham, Jr., "The Audubon Ark: A History of the National Audubon Society" (New York: Alfred A. Knopf, 1990) ISBN 0-394-58164-4* Michael J. Hay et Kenneth E. McConnell (1979).