History 723 History and criticism 262 Business enterprises 158 Corporations 153 Big business 151 African Americans 138 Social conditions 107 American literature 95 Bio-bibliography 93 Biography 89 General 88 Politics and government 82 Race relations 79 Authors, American 72 HISTORY 71 Economic conditions 65 Social aspects 63 SOCIAL SCIENCE 62 Jews 57 Criticism and interpretation 56 Law and legislation 51 Social life and customs 51 Law 49 Authors, English 46 Automobiles 45 World War, 1939-1945 44 Ethnic relations 43 Automobile industry and trade 42 Civilization 41 American poetry 40