Title: Early fur trade on the Northern Plains
Subjects: Sources, Hidatsa Indians, Canadian, Fur trade, Mandan Indians, Discovery and exploration, History, Indians of North America, Frontier and pioneer life, canada, Mandan (Indiens), Histoire, Hidatsa (Indiens), Fourrures, Commerce, Indiens (Habitants de l'Inde), Découverte et exploration canadiennes, State & Local, Discoveries in geography
Places: Great Plains