Philadelphia (Pa.)--History--20th century 5 Philadelphia (Pa.)--Officials and employees 3 Philadelphia (Pa.)--Social conditions--20th century 3 Mayors--Pennsylvania--Philadelphia 2 Philadelphia (Pa.)--City government--20th century 2 Philadelphia (Pa.)--Politics and government--20th century 2 Bessemer process 1 more ... Campaign management--United States 1 Elections--Pennsylvania--Philadelphia--History--20th century 1 Elections--United States--Planning 1 Engineering--Problems, exercises, etc 1 Equal Rights Amendment--United States--History--20th century 1 Falls of the Schuylkill--History--20th century 1 Insurance companies--United States--History 1 Municipal government--Pennsylvania--Philadelphia--20th century 1 Municipal officials and employees--Pennsylvania--Philadelphia 1 Municipal records--Philadelphia 1 Philadelphia (Pa.)--City planning 1 Philadelphia (Pa.)--Civic improvement 1 Philadelphia (Pa.)--Public welfare 1 Philadelphia (Pa.)--Social problems 1 Philadelphia Views--20th century 1 Political campaigns--Law and legislation--United States 1 Political campaigns--Pennsylvania 1 Railroad engineering 1 Science and engineering--Pennsylvania--Philadelphia--20th century 1 Steel 1 Steel--Standards--United States 1 Streets--Pennsylvania--Philadelphia 1 Wissahickon--Philadelphia (Pa)--History--20th century 1 Women's history--Pennsylvania--Philadelphia 1 Women's rights--United States--History--19th century 1 Women's suffrage--1880-1970 1 Women's suffrage--United States--1900-1920 1 Women's suffrage--United States--1910-1930 1 Women--Legal status, laws, etc.--Pennsylvania 1 Women--Legal status, laws, etc.--United States--History--20th century 1 less ...