Historical Society of Pennsylvania--Presidents 6 Historical Society of Pennsylvania 5 Historians--19th century 4 Historical Society of Pennsylvania--Correspondence 4 Historical Society of Pennsylvania--Employees--20th century 4 Historians--Early 20th Century 3 Historical Society of Pennsylvania--Speeches and lectures 3 more ... Girard College 2 Historians--Research Material 2 Historical Society of Pennsylvania--Researchers 2 Indians--19th century 2 Pennsylvania--History--17th and 18th centuries 2 Affirmative action programs--Government policy--United States--History--20th century 1 American Bar Association 1 American Friends Service Committee 1 Arbitration (Administrative law)--United States 1 Asociacion Nacional Pro Personas Mayores (U.S.) 1 Biddle Family 1 Biddle, John Craig 1 Billy Graham Evangelistic Association 1 Blue Cross of Greater Philadelphia 1 Canals--Chesapeake and Delaware 1 Cemeteries--Pennsylvania--19th Century 1 Clubs and Associations--Philadelphia--20th century 1 Commerce--Philadelphia--19th century 1 Continuing legal education 1 Cricket--United States--Pennsylvania--Philadelphia 1 Cuban American National Council (U.S.) 1 Democratic National Committee (U.S.) 1 Dispute resolution (Law) 1 Education--College life--19th Century 1 Election returns 1 Enterprise Foundation 1 Estate administration--19th century 1 Europe--Description and travel--1919-1944 1 Exelon Corporation 1 Free Library of Philadelphia 1 Fulbright scholarships--United States 1 Genealogy 1 Germantown (Philadelphia, Pa.) 1 less ...