Subject
Pacific railroads Early projects
62
Pacific railroads
45
Railroads
17
Pacific railroads Explorations and surveys
13
West (U.S.) Description and travel
11
History
7
Railroads History
7
West (U.S.) History
7
Pacific railroads History
5
Southwest, New Description and travel
5
Explorations and surveys
4
Texas Description and travel
4
West (U.S.)
4
Indians of North America Wars
3
Railroad construction workers History
3
United States Description and travel
3
Canada Description and travel
2
China Emigration and immigration History
2
Chinese History
2
Coal mines and mining
2
Employees
2
Foreign workers, Chinese History
2
Indians of North America
2
Northwestern States
2
Northwestern States Description and travel
2
Oregon History
2
Pacific railroads Finance
2
Physical geography
2
Railroad bridges
2
Railroads Design and construction
2
Roads
2
Shoshoni Indians
2
Trails
2
Canada Colonization
1
Canals, Interoceanic
1
China
1
Cities and towns History
1
Colorado
1
Consolidation and merger of corporations
1
Electric railroads
1
Ellsworth (Kan.)
1
Financial crises History
1
Frontier and pioneer life
1
Geology
1
Golden Spike National Historical Park (Utah)
1
Hualapai Indian Reservation (Ariz.) Trials, litigation, etc
1
Hualapai Indian Tribe of the Hualapai Indian Reservation, Arizona Trials, litigation, etc
1
Hualapai Indians Legal status, laws, etc. History
1
Idaho Economic conditions
1
Indian title History
1
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