He also imported exotic species from Europe and Canada, including wild boar from the Black Forest of Germany. From a natural level of 60 million in America, the bison population had been reduced by human activity to just 1,000 by the 1890s, and in 1904 160 of these animals lived within Corbin Park. The Corbin herd was destroyed in the 1940s following an outbreak of brucellosis. Baynes was famous for his tame bison and for driving around the park in a carriage pulled by a pair of bison. Amongst his published works is War Whoop and Tomahawk: The Story of Two Buffalo Calves (1929). Baynes commented: Of all the works of the late Mr. Austin Corbin, the preservation of that herd of bison was the one that would earn his country’s deepest gratitude. His experiment led to the founding of the American Bison Society and was connected, directly or otherwise, with the formation of some of our national parks. Modern bison resurgence efforts Many other bison herds are in the process of being created or have been created in state parks and national parks, and on private ranches, with individuals taken from the existing main 'foundation herds'. An example is the Henry Mountains bison herd in Central Utah which was founded in 1941 with bison that were relocated from Yellowstone National Park. This herd now numbers approximately 400 individuals and in the last decade steps have been taken to expand this herd to the mountains of the Book Cliffs, also in Utah. One of the largest privately owned herds, numbering 2,500, in the US is on the Tallgrass Prairie Preserve in Oklahoma which is owned by the Nature Conservancy. Ted Turner is the largest private owner of bison with about 50,000 on several different ranches. The current American bison population has been growing rapidly, and is estimated at 350,000 compared to an estimated 60 to 100 million in the mid-19th century. Most current herds, however, are genetically polluted or partly crossbred with cattle. Today there are only four genetically unmixed, free roaming, public bison herds and only two that are also free of brucellosis: the Henry Mountains Bison Herd and the Wind Cave Bison Herd. A founder population of 16 animals from the Wind Cave bison herd was re-established in Montana in 2005 by the American Prairie Foundation. The herd now numbers near 800 and roams a grassland expanse on