History 3,140 Sources 3,100 Genealogy 774 Archives 420 Bibliography 335 Registers of births, etc 283 Politics and government 243 more ... Archival resources 237 Histoire 198 Manuscripts 185 Emigration and immigration 116 Taxation 101 Catalogs 100 African Americans 99 Vital records 99 Finance, Public 96 Marriage records 94 Court records 91 Church records and registers 88 Manuscripts, American 88 Estate administration--19th century 83 Church history 82 Accounts--19th century 78 Poetry--19th century 78 Merchants--Pennsylvania--Philadelphia--18th century 70 Probate records 67 Indians of North America 66 Wills 64 Foreign relations 61 History, Local 57 Social life and customs--19th century 53 Militia 52 Public records 51 Cemeteries 48 Economic conditions 48 Population 46 Shipping--Pennsylvania--Philadelphia--18th century 46 Appropriations and expenditures 44 Biography 44 Societies, etc 44 less ...