Philadelphia (Pa.)--Social life and customs--19th Century 8 Genealogy 3 Spouses--Correspondence--19th century 3 Biddle Family 2 Diaries--19th century 2 Family life--Pennsylvania--19th century 2 Family life--Pennsylvania--20th century 2 more ... History of Philadelphia 2 Spouses--Correspondence-–20th century 2 Ballet companies--Pennsylvania--Philadelphia 1 Canals and railroads--19th century 1 Canals--Chesapeake and Delaware 1 Caterers and Catering--20th Century 1 Centennial Exhibition (1876 : Philadelphia, Pa.) 1 Children's diaries, American 1 Clubs--Pennsylvania--Philadelphia 1 Commerce--Philadelphia--19th century 1 Delaware & Schuylkill Canal 1 Engineering--Pennsylvania--Philadelphia 1 Estate administration--19th century 1 Europe--Description and travel 1 Family life--19th century 1 Family life--Pennsylvania--18th century 1 Family life--Pennsylvania--Philadelphia 1 Family life--Pennsylvania--Philadelphia--19th century 1 Family life--Personal correspondence--19th century 1 Family life--Personal correspondence--20th century 1 Family life--Upper Class--19th century 1 Family life--Upper Class--Pennsylvania--Philadelphia--20th century 1 Frothingham, Mary G. 1 Germantown (Philadelphia, Pa.) 1 Germantown (Philadelphia, Pa.)--History 1 Glen Foerd (Philadelphia, Pa.) 1 Graeme Park, Pa 1 Historians--19th century 1 Historians--Pennsylvania 1 Historical Society of Pennsylvania 1 Historical Society of Pennsylvania--Founding members 1 Historical Society of Pennsylvania--Researchers 1 History and Historians--19th century 1 less ...