History Churches 100 Sources 50 Church history 49 Historic buildings 36 Archival resources 32 Archives 32 more ... Episcopal 32 Biography 26 Indians of North America 24 Hospitals 22 Presbyterian Church 22 Bibliography 21 Baptists 18 Quakers 18 Banks and banking 17 Social life and customs 17 African Americans 16 Physicians 15 Presbyterian 14 Baptist 12 Catholic 12 Fire insurance 12 Pennsylvania Dutch 12 Regimental histories 12 Social conditions 12 Education 11 Insurance companies 11 Commerce 10 Description and travel 10 Germans 10 Publishers and publishing 10 Reformed Church 10 Women 10 German Americans 9 Penn 9 Railroads 9 Soldiers 9 Economic conditions 8 High schools 8 less ...