History 917 Social conditions 155 African Americans 125 Politics and government 116 Histoire 109 Social aspects 93 Race relations 90 Social life and customs 87 Economic conditions 76 HISTORY 75 General 69 Indians of North America 61 Description and travel 48 Manners and customs 43 Society of Friends 42 Education 37 Art 34 Coal miners 34 Architecture 33 Industries 32 State & Local 32 Urban renewal 32 Quakers 31 Women 31 BUSINESS & ECONOMICS 30 Buildings, structures, etc 29 City planning 29 Labor unions 29 Ethnic relations 28 Gettysburg, Battle of, Gettysburg, Pa., 1863 28 Church history 27 Economic history 27 SOCIAL SCIENCE 27 Working class 27 Labor movement 25 Religious aspects 25 Immigrants 24 Homes and haunts 23 Middle Atlantic (DC, DE, MD, NJ, NY, PA) 23 Pennsylvania Dutch 23 Antiquities 22 Criticism and interpretation 22 Iron and steel workers 22 Law 22 Civil rights 21 Coal mines and mining 21 Economic aspects 21 Steel industry and trade 21 Historic buildings 20 Geology 19 Intellectual life 19 Political aspects 19 Private collections 19 Religion 19 African American women 18 Antislavery movements 18 Art, American 18 Cultural assimilation 18 Law and legislation 18 Prisoners 18 History and criticism 17 Jews 17 Law reviews 17 POLITICAL SCIENCE 17 Politique et gouvernement 17 Emigration and immigration 16 Ethnic identity 16 Government policy 16 Theater 16 history 16 Art collections 15 Art museums 15 Employment 15 Free African Americans 15 Frontier and pioneer life 15 Historic sites 15 Labor 15 Medical care 15 Medicine 15 Painting 15 BIOGRAPHY & AUTOBIOGRAPHY 14 Conditions sociales 14 Iroquois Indians 14 New England (CT, MA, ME, NH, RI, VT) 14 Slavery 14 Urbanization 14 Architecture, Domestic 13 Civilization 13 Droit 13 Elections 13 Families 13 Finance 13 Moravians 13 Yellow fever 13 Community development 12 Fugitive slaves 12 German Americans 12 HISTORY / General 12 Industrialization 12 Prisons 12