The U.S. Congress created Lafayette National Park at Mt. Desert Island on the coast of Maine on February 26, 1919. The park, expanded and renamed Acadia National Park in 1929, was the first national park east of the Mississippi.
Also on this date in 1919, Congress established the Grand Canyon National Park in the state of Arizona. Comprising over one million acres of northwestern Arizona, the park includes the most spectacular area of the 277-mile canyon cut by the Colorado River.