by United States. Army. Corps of Engineers. Philadelphia District

1966

by Engineers Club of Philadelphia

1880

by Philadelphia (Pa.). Bureau of Engineering, Surveys & Zoning

1888

by Engineers Club of Philadelphia

1891

by Franklin Institute (Philadelphia, Pa.)

1919

by Philadelphia (Pa.). Bureau of Engineering, Surveys & Zoning

1912

by City Club of Philadelphia

1913

by Engineers Club of Philadelphia

1928

by Engineers Club of Philadelphia

1917

by Philadelphia (Pa.). Civil Service Commission

1913

by Philadelphia (Pa.). Mayor

1890