Yellowstone Insider Your Complete Guide to America's First National Park

When President Ulysses S. Grant signed the Yellowstone National Park Protection Act into law on March 1, 1872, he created the National Park Service — as well as creating America’s First National Park, Yellowstone National Park.

The annual spring culling of Yellowstone bison has begun, as 23 bison that were part of a larger herd heading north of Mammoth Hot Springs were captured near the Stephens Creek facility.