The three tribes are comprised of the Mandans, Hidatsas, and Arikaras. Although the first two had long-established friendships, the Caddoan-speaking Arikaras (related to the central plains Pawnee) later joined in the interests of common defense against the Sioux. By 1845, when Like-A-Fish-Hook village was established, it became increasingly common among white fur traders to refer to the “Three Affiliated Tribes” and the name has been used to this day.
612 East Boulevard Ave.
Bismarck, North Dakota 58505
State Museum and Store: 8 a.m. - 5 p.m. M-F; Sat. & Sun. 10 a.m. - 5 p.m.
We are closed New Year's Day, Easter, Thanksgiving Day, and Christmas Day.
We will also be closed on Christmas Eve this year.
State Archives: 8 a.m. - 4:30 p.m. M-F, except state holidays; 2nd Sat. of each month, 10 a.m. - 4:30 p.m.
State Historical Society offices: 8 a.m. - 5 p.m. M-F, except state holidays.