Advocacy organizations--Philadelphia--20th century 1 Affirmative action programs--Government policy--United States--History--20th century 1 Built environment--Pennsylvania--Philadelphia--20th century 1 Business and manufacturing--Pennsylvania--Philadelphia--20th century 1 Business mergers and acquisitions--20th century 1 Business--History--Pennsylvania--Philadelphia--20th century 1 City planning and development--Pennsylvania--Philadelphia--20th century 1 more ... City planning--Pennsylvania--Philadelphia--20th century 1 Civil rights movements 1 Coal Industry--19th century 1 Coal Industry--20th century 1 Coal mines and mining--Pennsylvania 1 Coal mines and mining--West Virginia--20th century 1 Condominiums 1 Consumer activism--20th century 1 Discrimination in housing 1 Family life--Pennsylvania--20th century 1 Family life--Personal correspondence--20th century 1 Housing development--United States 1 Lawyers--Pennsylvania--Philadelphia--20th century 1 Lectures and lecturing--Pennsylvania--Philadelphia 1 Library buildings--Pennsylvania--Philadelphia 1 Library catalogs--Pennsylvania--Philadelphia 1 Museums--Pennsylvania--Philadelphia--20th century 1 Pennsylvania--Politics and government--20th century 1 Philadelphia (Pa.)--City government--20th century 1 Philadelphia (Pa.)--Politics and government--20th century 1 Politics and government--Pennsylvania--Philadelphia--20th century 1 Race discrimination 1 Segregation 1 Subscription libraries--Pennsylvania--Philadelphia 1 United States--Politics and government--20th century 1 Urban renewal 1 Veterans--Education--Government policy--United States 1 Veterans--Education--United States 1 Veterans--Education--United States--Costs 1 Veterans--Education--United States--Evaluation 1 Veterans--Education--United States--History--20th century 1 Veterans--Employment--United States 1 Veterans--Employment--United States--Evaluation 1 less ...