History 200 Music 86 Slavery 71 African Americans 64 History and criticism 61 Criticism and interpretation 56 Social aspects 55 more ... Research 48 Biography 45 Politics and government 39 Social conditions 37 Women 33 Womyn 31 Musicians 28 Astronomy 26 Exhibitions 26 Periodicals 24 Art 23 Political aspects 23 Bibliography 22 Economic aspects 22 Race relations 22 Government policy 21 Manuscripts 21 Themes, motives 21 Social life and customs 20 Cancer 19 Law and legislation 19 Education 18 Operas 18 less ...