History 1,064 Histoire 156 Politics and government 140 Social conditions 137 African Americans 129 Social life and customs 127 Race relations 74 more ... Indians of North America 70 Architecture 68 Art 67 Description and travel 67 Economic conditions 67 Regimental histories 63 Social aspects 63 Gettysburg, Battle of, Gettysburg, Pa., 1863 61 Printing 60 Type and type-founding 46 Working class 44 Education 42 Buildings, structures, etc 41 Law and legislation 40 Pennsylvania Dutch 40 Campaigns 38 Coal miners 38 Society of Friends 37 Type ornaments 36 City planning 35 Quakers 35 Steel industry and trade 35 Private collections 34 less ...