Sources 3,007 History 2,775 Genealogy 748 Archives 404 Bibliography 331 Registers of births, etc 273 Archival resources 232 more ... Politics and government 214 Manuscripts 177 Catalogs 124 Vital records 100 Taxation 98 Finance, Public 95 Manuscripts, American 87 Court records 86 Marriage records 86 Emigration and immigration 84 Estate administration--19th century 81 Church records and registers 79 African Americans 77 Accounts--19th century 76 Poetry--19th century 75 Church history 68 Merchants--Pennsylvania--Philadelphia--18th century 68 Probate records 65 Wills 60 Indians of North America 57 History, Local 53 Social life and customs--19th Century 53 Biography 51 Militia 50 Public records 50 Cemeteries 48 Economic conditions 47 Population 46 Shipping--Pennsylvania--Philadelphia--18th century 45 Appropriations and expenditures 44 Foreign relations 42 Weather--Personal accounts 42 Deeds 40 less ...