"David Rice Atchison"@en . "1849-12-02Z"^^ . . "1886Z"^^ . "1852-12-20Z"^^ . "Confederate Army officer, President Pro-Tempore of the Senate, \"President for a Day\"" . . . "1854-12-04Z"^^ . . . "1846-08-08Z"^^ . "1843-10-14Z"^^ . . . "David Rice Atchison (August 11, 1807 \u2013 January 26, 1886) was a mid-19th century Democratic United States Senator from Missouri. He served as President pro tempore of the United States Senate for six years. He is best known for the claim that for one day (March 4, 1849) he may have been Acting President of the United States."@en . . "1855-03-03Z"^^ . "1807Z"^^ . . . "President pro tempore of the United States Senate" . . . . "Atchison, David Rice"@en . "1807-08-11Z"^^ . . "1886-01-26Z"^^ . .