Yellowstone Park was discovered in December 1807 by Mountain Man John Colter. The 3400-square mile park was designated America’s first “National Park” on March 1, 1872 when President Ulysses S. Grant signed the Yellowstone National Park Bill. It was “Set Aside for All the People”.
N.R. Langford was appointed the first Park Superintendent. He received no pay or salary and no funds were designated for operation of the Park. Poachers and Renegade Indians proved to be a problem and the U.S. Army was called in to restore order. In 1917, the newly formed National Park Service took control.