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Reinterpreting the 1882 Bison Population Collapse - All About Bison
The Bison: from 30 million to 325 (1884) to 500,000 (today)
Bison Timeline - All About Bison
Last of the Bison by State - All About Bison
Genetic Diversity of Wind Cave's Bison Herd - U.S. National Park Service
The Non-Tragedy of the Bison Commons - PERC
Reinterpreting the 1882 Bison Population Collapse☆
American bison - Wikipedia
Bison / Buffalo - U.S. National Park Service