Yellowstone Becomes First National Park
On March 1, 1872, president Ulysses S. Grant signed legislation establishing Yellowstone National Park, the first such park in the world.
National Parks
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Completion of Washington Monument
On December 6, 1884, the Washington Monument was completed, 36 years after its cornerstone was laid.
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Founding of El Yunque National Forest
On January 17, 1903, the National Forest Service established Luquillo Forest Reserve (today known as El Yunque National Forest) in Puerto Rico.
