National Geographic : 1947 May
Wild Ancestors of the Bison in Wind Cave National Park Once Roamed These Hills and Furnished Food for Indians This herd was started in 1913, with help from the former U. S. Biological Survey, the American Bison Society, and theNew York Zoological Society. Grazing on 28,000 acres, some 315 animals winter here on grass alone, requiring no other feeding. In winter the hardy beasts sweep away asmuch as30inches ofsnow touncover the grass by swinging their big heads from side to side. Years ago, as a youngster, U. S. District Attorney George Philip, ofRapid City, took two buffalo bulls toMexico and entered them in arenas there to fight Mexican bulls. The bison were victors.