Yellowstone was made up of pristine wilderness straddling the Montana, Wyoming, and Idaho territories. (Tthey weren't states back in 1872, and the federal government oversaw the park until the National Parks Service was created in 1916.)
Native Americans have lived in the Yellowstone region for at least 11,000 years. The region was bypassed during the Lewis and Clark Expedition in the early 19th century. Aside from visits by mountain men during the early-to-mid-19th century, organized exploration did not begin until the late 1860s. The U.S. Army was commissioned to oversee the park just after its establishment. In 1917, administration of the park was transferred to the National Park Service, which had been created the previous year. Hundreds of structures have been built and are protected for their architectural and historical significance, and researchers have examined more than 1,000 archaeological sites
USA Records Organization_USKINGS are still collecting more information from many sources and it is our pleasure listening to everybody's comments to have a full evaluation on USKings around you nomination: “Oldest National Park : Yellowstone National Park“
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