History 451
Social conditions 177
Social aspects 82
Politics and government 77
Race relations 77
Social life and customs 60
African Americans 50
Mexican Americans 49
Ethnic relations 47
Immigrants 44
Indians of North America 43
Economic conditions 40
Motion picture industry 40
Ethnic identity 37
Law and legislation 37
Emigration and immigration 36
Environmental aspects 36
Motion pictures 31
Political activity 30
Description and travel 29
Community life 27
Education 27
Government policy 26
Civil rights 25
Chinese Americans 24
History and criticism 24
Economic aspects 23
City planning 22
Environmental conditions 21
Gangs 21
Japanese Americans 21
Political aspects 21
Gold discoveries 20
Minorities 20
Hispanic Americans 19
Natural history 19
Water-supply 19
Prevention 18
Employment 17
Migrant agricultural laborers 17
Women 17
Agricultural laborers 16
Earthquakes 16
Riots 16
Student movements 16
Labor unions 15
Police 15
Cultural assimilation 14
Gold mines and mining 14
Research 14
Antiquities 13
College students 13
Indigenous peoples 13
Racism 13
Wine and wine making 13
World War, 1939-1945 13
Civilization 12
Community development 12
Community gardens 12
Family relationships 12
Governors 12
Homelessness 12
Legal status, laws, etc 12
Management 12
Marijuana 12
Mexicans 12
Prisoners 12
Services for 12
Youth 12
American literature 11
Asian Americans 11
Frontier and pioneer life 11
In literature 11
Korean Americans 11
Missions 11
Motion picture actors and actresses 11
Religion 11
Social change 11
Students 11
Children 10
Civil rights movements 10
Family members 10
Filipino Americans 10
Fires 10
Homeless persons 10
Intellectual life 10
Medical care 10
Murder 10
Political activists 10
Popular culture 10
Prisons 10
Public health 10
Race identity 10
Religious aspects 10
School improvement programs 10
Agriculture 9
Attitudes 9
Childhood and youth 9
Environmental policy 9
Family 9