Subject
History
70
Gold discoveries
16
Frontier and pioneer life
14
Gold mines and mining
13
Social aspects
12
Social conditions
11
Race relations
8
Economic conditions
6
Indians of North America
6
Chinese Americans
5
Legal status, laws, etc
5
Politics and government
5
Chinese
4
Crimes against
4
Emigration and immigration
4
Genocide
4
Hispanic Americans
4
Law
4
Pioneers
4
Press coverage
4
Social life and customs
4
Cinco de Mayo (Mexican holiday)
3
Ethnic identity
3
Labor policy
3
Legislation
3
Puebla, Battle of, Puebla de Zaragoza, Mexico, 1862
3
Sex role
3
Slavery
3
Women pioneers
3
Civilization
2
Criticism and interpretation
2
Dialects
2
French
2
Government relations
2
Heterosexuality
2
Labor
2
Land use
2
Landscapes
2
Mercury ores
2
Mexican Americans
2
Mexican influences
2
Middle class
2
Mineral industries
2
Mining camps
2
Navigation
2
Overland journeys to the Pacific
2
Power (Social sciences)
2
Shipping
2
Social structure
2
Spanish language
2
more ...