History 90 Politics and government 21 History and criticism 18 Presidents 16 Authors, American 15 Artists 12 Jazz musicians 12 Biography 11 Composers 10 Feminists 10 African Americans 9 Criticism and interpretation 9 Journalists 9 Social conditions 8 Foreign relations 7 Slaves 7 Blues musicians 6 Dancers 6 Inventors 6 Painters 6 Poets, American 6 Political and social views 6 Race relations 6 Afro-Americans 5 Choreographers 5 Economists 5 Intellectual life 5 Novelists, American 5 Photographers 5 Rock musicians 5