U.S. Plains
1997
Sam Abell

“Traveling the breadth of the Great Plains???one of the world’s largest grasslands???[Meriwether Lewis and William Clark] saw ‘immence herds of Buffaloe, deer, Elk...in every direction feeding on the hills and plains.’ Today, fewer than 250,00 American bison inhabit the Plains. They are protected on a handful of preserves.”

???From the National Geographic book Lewis & Clark: Voyage of Discovery, 1998

http://www.nationalgeographic.com