History 269 Biography 96 Politics and government 82 History and criticism 65 Criticism and interpretation 61 Description and travel 42 Fiction 36 Social conditions 33 Periodicals 30 Economic conditions 29 Civilization 27 Correspondence 27 Science 27 Education 23 Social life and customs 23 Philosophy 21 Colonies 20 Geology 18 Foreign relations 15 Music 15 Sources 15 Dictionaries 14 Working class 14 Agriculture 13 Bibliography 12 Pictorial works 12 Authors, English 11 City planning 11 Intellectual life 11 Mathematics 11