History 1,404 Social conditions 427 Social aspects 201 Politics and government 200 Indians of North America 171 Race relations 171 Social life and customs 167 more ... Description and travel 140 Mexican Americans 134 Motion picture industry 133 Gold mines and mining 129 African Americans 121 Ethnic relations 121 Gold discoveries 120 Immigrants 106 Motion pictures 105 Law and legislation 104 Economic conditions 100 Ethnic identity 99 History and criticism 97 Manners and customs 91 Artists' books 87 Emigration and immigration 85 Architecture 79 Japanese Americans 76 Political aspects 75 Chinese Americans 73 Government policy 73 Political activity 66 Art 64 less ...