Historic Buildings--Pennsylvania--Philadelphia 6 Historic Sites--Pennsylvania 6 Historical Society of Pennsylvania--Presidents 6 Historic buildings--Philadelphia 5 Historical Society of Pennsylvania 5 Historians--19th century 4 Historians--Early 20th Century 4 more ... Historical Society of Pennsylvania--Correspondence 4 Historical Society of Pennsylvania--Employees--20th century 4 Historical Society of Pennsylvania--Speeches and lectures 3 Historical societies--United States 3 Lantern Slides 3 Pennsylvania--History--Colonial period, ca. 1600-1775 3 Clubs and Associations--Philadelphia--20th century 2 Estate administration--19th century 2 Genealogy 2 Germantown (Philadelphia, Pa.)--History 2 Girard College 2 Historians--Research Material 2 Historic buildings--Pennsylvania--Philadelphia 2 Historic house museums--Furniture, equipment, etc 2 Historic house museums--Interpretive programs 2 Historic preservation 2 Historical Scenes--Philadelphia--Watercolors 2 Historical Societies--Philadelphia 2 Historical Society of Pennsylvania--Researchers 2 Historical fiction 2 Indians--19th century 2 Pennsylvania--History 2 Pennsylvania--History--17th and 18th centuries 2 Philadelphia Independent Charter Commission 2 Philadelphia Views--19th century 2 Affirmative action programs--Government policy--United States--History--20th century 1 African American Presbyterians--Pennsylvania--Philadelphia 1 African American abolitionists 1 African American baseball players--History 1 African American churches 1 African American civic leaders--Pennsylvania--Philadelphia 1 African American educators 1 African American families -- Pennsylvania -- Philadelphia 1 less ...