The International Society Daughters of Utah Pioneers (ISDUP, DUP) is a women's organization dedicated to preserving the history of the original settlers of the geographic area covered by the State of Deseret and Utah Territory, including Mormon pioneers. The organization is open to any woman who is: (1) A direct-line descendant or legally adopted direct-line descendant with a pioneer ancestor; (2) the pioneer ancestor is a person who traveled to or through the geographic area covered by the State of Deseret/Utah Territory between July 1847 and 10 May 1869 (completion of the railroad, May 10, 1869); (3) over the age of eighteen, and of good character. Travel through the geographic area covered by the State of Deseret/Utah Territory can be either east to west, west to east, north to south, o