Family life--Pennsylvania--20th century 3 Philadelphia (Pa.)--Politics and government--20th century 3 Affirmative action programs--Government policy--United States--History--20th century 2 Centennial Exhibition (1876 : Philadelphia, Pa.) 2 Consumer activism--20th century 2 Freemasons--Philadelphia--19th century 2 Medicine 2 more ... Philadelphia (Pa.)--City government--20th century 2 Philadelphia (Pa.)--City planning 2 Philadelphia (Pa.)--Officials and employees 2 Philanthropy--Philadelphia--20th Century 2 Psychiatry 2 Puerto Rican Week Festival (Philadelphia, Pa.) 2 Quakers--Pennsylvania--18th century 2 Slavery 2 Spouses--Correspondence--19th century 2 Spouses--Correspondence-–20th century 2 Women's history--Pennsylvania--Philadelphia 2 AIDS (Disease) 1 Academy of Natural Sciences--Philadelphia (Pa.) 1 Adoption--Pennsylvania--19th and 20th centuries 1 Advocacy organizations--Philadelphia--20th century 1 African Americans--Georgia 1 African Americans--History--Child Welfare--19th and 20th centuries 1 African Americans--History--Negro Education--Late 19th Century 1 African Americans--Pennsylvania--Philadelphia--Theater 1 Alcoholism 1 American Bar Association 1 American Friends Service Committee 1 Arbitration (Administrative law)--United States 1 Arithmetic--Textbooks--Early works to 1900 1 Armenia--History 1 Armenian massacres, 1894-1896 1 Art and Artists--Pennsylvania--Philadelphia--19th century 1 Asociacion Nacional Pro Personas Mayores (U.S.) 1 Bayer, Ernestine, 1905 or 1906-1997 1 Bereavement 1 Billy Graham Evangelistic Association 1 Black theater--Pennsylvania--Philadelphia 1 Blue Cross of Greater Philadelphia 1 less ...