By Mail
Fort Union Trading Post NHS
15550 Hwy 1804
Williston, ND 58801
By Phone
Headquarters/Visitor Center - (701) 572-9083
Maintenance Shop - (701) 572-0233
By Fax
701-572-7321
By Email
Email Us
By Mail By Phone Maintenance Shop - (701) 572-0233 By Fax By Email
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Last updated: December 23, 2015