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  • September

    100-year-old National Park Service's roots go deeper with U.S. Army

    This year, the National Park Service celebrates its 100th anniversary. Yellowstone National Park, the world’s first national park established in 1872 by President Ulysses Grant, has close ties to the U.S. Army Corps of Engineers. The connection between the National Park Service and USACE is one that has continued through the years.