History 807 History and criticism 526 General 457 African Americans 234 Social aspects 204 American poetry 189 SOCIAL SCIENCE 188 HISTORY 178 Politics and government 168 Criticism and interpretation 161 Music 156 Social conditions 149 Blue collar workers 141 LITERARY CRITICISM 139 American 138 Blues (Music) 123 Social life and customs 122 African American authors 109 POLITICAL SCIENCE 101 POETRY 100 MUSIC 97 American literature 95 Race relations 91 BIOGRAPHY & AUTOBIOGRAPHY 89 Manners and customs 83 Poetry 79 Jazz 73 Motion pictures 73 Popular music 72 Reference 71