Subject
Frontier and pioneer life
West (U.S.) History
70
Pioneers
33
Women pioneers
30
Indians of North America Wars
24
West (U.S.)
22
Indians of North America
18
Overland journeys to the Pacific
18
Cowboys
16
Indians of North America History
15
History
14
Military life
14
West (U.S.) Description and travel
14
United States Territorial expansion
13
Women
12
New Mexico History
11
Ranch life
11
Colorado History
10
Fur trade
10
Women History
10
Colorado
9
Frontier thesis
9
California Gold discoveries
8
Southwest, New History
8
West (U.S.) Social life and customs
8
Women pioneers History
8
Cattle trade
7
Crime
7
Outlaws
7
Texas History
7
United States History
7
American literature History and criticism
6
Arizona History
6
Colorado Gold discoveries
6
Latter Day Saints History
6
Mines and mineral resources
6
National characteristics, American
6
Northwestern States History
6
Cowboys History
5
Families History
5
Farm life History
5
Indians of North America Government relations
5
Kansas History
5
Officers' spouses
5
Pioneers History
5
South Dakota History
5
Southwest, New
5
Violence History
5
American bison
4
Arizona
4
more ...