City planning 58 History 12 Streets 7 Urban renewal 6 City planning--Pennsylvania--Philadelphia--20th century 5 Social conditions 5 Economic conditions 4 more ... Politics and government 4 Cities and towns 3 Civic improvement 3 Land use 3 City planners 2 City planning--Pennsylvania--Philadelphia 2 Conservation and restoration 2 Cultural policy 2 Forecasting 2 Lawyers--Pennsylvania--Philadelphia--20th century 2 Social life and customs 2 Urban beautification 2 Urban policy--Pennsylvania--Philadelphia 2 Accessories 1 Accounting 1 Advertising--Pennsylvania--Philadelphia--20th Century 1 Advocacy organizations--Philadelphia--20th century 1 Affirmative action programs--Government policy--United States--History--20th century 1 Airports--Philadelphia 1 Architectural design 1 Architecture 1 Architecture--20th Century 1 Art and state 1 Avenue of the Arts (Philadelphia, Pa.) 1 Building Trade--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 Central business districts--Pennsylvania--Philadelphia 1 Charities 1 Citites and towns 1 City planning and development--Pennsylvania--Philadelphia--20th century 1 less ...