Subject
Fur trade
Indians of North America
6
Frontier and pioneer life
3
Northwestern States Description and travel
3
Northwest, Canadian Description and travel
2
Canada Description and travel
1
Crow Indians
1
Fort Clark (N.D.)
1
Great Lakes (North America)
1
Mandan Indians
1
Mountain States Description and travel
1
Northwest Passage
1
Northwest, Pacific
1
Northwest, Pacific Description and travel
1
Overland journeys to the Pacific
1
West (U.S.) Discovery and exploration
1
Wyoming Description and travel
1
Yukon
1