In 1872, President Ulysses S.Grant signed a law declaring that Yellowstone would forever be dedicated and set apart as a public park or pleasuring ground for the benefit and enjoyment of the people.

• 1872年，格<特总统签署法规，明文宣布将永远划定并保护黄石区地貌为国家公园，这是美国的第一个国家公园。