History 1,371 Social conditions 416 Politics and government 194 Social aspects 194 Race relations 171 Indians of North America 165 Social life and customs 163 Description and travel 139 Motion picture industry 130 Mexican Americans 125 Gold mines and mining 122 African Americans 120 Ethnic relations 119 Gold discoveries 117 Immigrants 104 Law and legislation 102 Motion pictures 102 Economic conditions 100 Ethnic identity 99 History and criticism 96 Manners and customs 88 Artists' books 84 Emigration and immigration 81 Architecture 79 Japanese Americans 76 Political aspects 74 Chinese Americans 73 Government policy 69 Political activity 66 Education 61 Art 60 Hispanic Americans 56 Water-supply 55 Women 55 Buildings, structures, etc 54 Environmental aspects 54 Art collections 53 Art museums 53 City planning 51 Environmental conditions 50 Minorities 50 Civil rights 49 Frontier and pioneer life 49 Economic aspects 48 Law reviews 46 Art, American 45 Labor unions 44 Photograph collections 43 Antiquities 42 Community life 42 Legal status, laws, etc 42 Geology 41 Ecology 40 Employment 40 Law 40 Private collections 40 Criticism and interpretation 39 Families 39 Missions 39 American literature 38 In literature 38 Management 38 Water resources development 38 Intellectual life 37 Ethnicity 36 Exhibitions 36 Music 36 Travel 34 World War, 1939-1945 34 Civilization 33 Printing 33 Chinese 32 Natural history 32 Agricultural laborers 31 Architecture, Domestic 31 Gangs 31 Migrant agricultural laborers 31 Painting 31 Economic history 30 Police 30 Agriculture 29 Noncitizens 29 Photography, Artistic 29 Research 29 Asian Americans 28 Cultural assimilation 28 Jews 28 Overland journeys to the Pacific 28 Religion 28 Filipino Americans 27 Homes and haunts 27 Motion picture actors and actresses 27 Popular culture 27 Motion picture producers and directors 26 Forced removal and internment, 1942-1945 25 Land use 25 Mexicans 25 Trials, litigation, etc 25 Womyn 25 Korean Americans 24