トーマス・リンカーン
This article incorporates text from Thomas Lincoln article on the Lincoln Boyhood National Monument site, a work of the アメリカ合衆国国立公園局 and as such in the パブリックドメイン.
McMurtry, R. Gerald, 1906-1988; Warren, Louis Austin, 1885-1983, The Thomas Lincoln Mill Creek Farm. Lincolnania Publishers.
National Park Service, Abraham Lincoln's Birthplace at Sinking Spring Farm
National Park Service, Abraham Lincoln's Boyhood Home at Knob Creek