Ken Drexler, Reference Specialist, Researcher and Reference Services Division
Created: August 3, 2021
Last Updated: August 10, 2021
An act establishing Yellowstone National Park was signed into law by President Ulysses S. Grant on March 1, 1872. Officially titled "An Act to set apart a certain Tract of Land lying near the Head-waters of the Yellowstone River as a public Park," this landmark legislation created the first national park.