History 309 HISTORY 95 General 91 Social conditions 84 Art 68 Politics and government 68 African Americans 64 more ... Gettysburg, Battle of, Gettysburg, Pa., 1863 57 SOCIAL SCIENCE 56 Social life and customs 56 State & Local 45 Race relations 42 Private collections 38 Indians of North America 37 Social aspects 37 Economic conditions 35 POLITICAL SCIENCE 34 Art, Modern 33 Education 33 Art, American 30 Art collections 29 Middle Atlantic (DC, DE, MD, NJ, NY, PA) 29 BIOGRAPHY & AUTOBIOGRAPHY 26 BUSINESS & ECONOMICS 20 New England (CT, MA, ME, NH, RI, VT) 20 Painting 20 Church history 18 Description and travel 18 Buildings, structures, etc 17 Emigration and immigration 17 less ...