History 7,136 Streets 2,135 Politics and government 1,315 Almanacs, American 1,261 Description and travel 1,190 Jews 778 African Americans 694 more ... Biography 572 Slavery 508 Churches 498 Railroads 468 Indians of North America 465 Societies, etc 458 Social life and customs 433 Histoire 422 Medicine 422 Physicians 391 Schools 384 Education 382 Society of Friends 362 Almanacs, German-American 349 Philadelphia 331 Residences 331 Sermons, American 330 Clergy 328 Social conditions 320 Study and teaching 318 Anniversaries, etc 314 Church records and registers 304 Theatrical productions 291 Sources 287 Women 284 Church history 280 Quakers 259 Charities 258 Historic buildings 257 Economic conditions 255 Commerce 243 Foreign relations 232 Genealogy 231 less ...