History 2,244 History and criticism 1,495 American literature 638 Politics and government 543 Foreign relations 448 African Americans 428 Social conditions 374 Social aspects 341 American fiction 329 Testing 315 Race relations 300 American poetry 276 Criticism and interpretation 258 Materials 252 Metals 213 Civilization 195 Authors, American 192 Economic conditions 187 Afro-Americans 185 Addresses, essays, lectures 184 Women authors 182 English literature 179 Political aspects 163 Fatigue 162 Intellectual life 156 Popular culture 151 Social life and customs 138 Civil rights 134 Emigration and immigration 124 Art, American 123