History 20 Sources 19 Genealogy 7 Archives 4 Emigration and immigration 4 Pennsylvania--History--Colonial period, ca. 1600-1775 4 African Americans 3 more ... Bibliography 3 Immigrants 3 Jews 3 Manuscripts, American 3 Registers of births, etc 3 Catalogs 2 Church records and registers 2 Commerce 2 German Americans 2 Historians--19th century 2 Historians--Pennsylvania 2 History of Philadelphia 2 Irish 2 Mason-Dixon Line 2 Pennsylvania--History 2 Philadelphia (Pa.)--City government--20th century 2 Philadelphia (Pa.)--History--20th century 2 Philadelphia (Pa.)--Officials and employees 2 Philadelphia (Pa.)--Politics and government--20th century 2 Philadelphia (Pa.)--Social conditions--20th century 2 Philadelphia Views--19th century 2 Social life and customs 2 Women's history--Pennsylvania--Philadelphia 2 World War II 2 Account books 1 Actors and actresses 1 African American families 1 African American universities and colleges 1 African Americans--Education 1 American literature 1 Art Exhibitions 1 Art and artists--Pennsylvania--Philadelphia 1 Artists 1 less ...