Yellowstone National Park

Photo: Jacob W. Frank/NPS, Bison Crossing the Road Key dates: The United States Congress established Yellowstone National Park in 1872. On March 1, 1872, President Ulysses S. Grant signed the Yellowstone National Park Protection Act into law. The world’s first national park was born. Key Linksnps.gov/[email protected] SlideshareYellowstone National Park on the Web HeadlinesRetrospective: Historic Mammoth …