History Sources 281 Regimental histories 180 Church history 168 Histoire 165 Churches 141 Societies, etc 141 more ... Social life and customs 136 Politics and government 122 Indians of North America 113 Description and travel 101 Genealogy 98 African Americans 96 Historic buildings 92 Buildings, structures, etc 90 Social conditions 82 Biography 79 Quakers 69 Economic conditions 68 Education 67 Railroads 67 Archives 66 Germans 66 Registers of births, etc 66 Soldiers 66 Militia 65 Bibliography 63 Pennsylvania Infantry 63 Taxation 60 Finance, Public 56 Pennsylvania Dutch 55 Race relations 55 German Americans 52 Society of Friends 51 Campaigns 50 Emigration and immigration 45 Jews 44 Episcopal 41 Archival resources 40 Hospitals 38 less ...