Fort Mandan State Historic Site is temporarily closed for maintenance until further notice.
The primary Corps of Discovery contacts among North Dakota Native Peoples
were, of course, the Mandan and Hidatsa. However, they also made contact
with the Caddoan-speaking Arikara near the North Dakota-South Dakota border,
as well with a number of Dakota (Sioux) bands, notably the Yanktonai and
Lakota. In the decades after the expedition, Dakota power grew along the
Missouri and increasingly hedged in the Mandan and Hidatsa. By the middle
of the 19th century, Dakota power probably reached its peak with their
ascendency as the regions’ most powerful Native American group.
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Bismarck, North Dakota 58505
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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, Christmas Eve, and Christmas Day.
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. Appointments are recommended. To schedule an appointment, please contact us at 701.328.2091 or archives@nd.gov.
State Historical Society offices: 8 a.m. - 5 p.m. M-F, except state holidays.
Contact Us:
phone: 701.328.2666
email: history@nd.gov
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