by Pittsburgh, Fort Wayne, and Chicago Rail Road Company

1862

by Cleveland and Pittsburgh Railroad Company

1871

by Pittsburgh (Pa.). Council

1929

by Pittsburgh, Cincinnati, Chicago and St. Louis Railway Company

1904

by Chamber of Commerce (Pittsburgh, Pa.)

1884

by Cleveland and Pittsburgh Railroad Company

1871

by Greater Pittsburgh Chamber of Commerce

1884

by Chamber of Commerce of Pittsburgh

1884

by Pittsburgh & West Virginia Railway Company

1929

by Chicago, St. Louis and Pittsburgh Railroad Company

1884

by Pittsburgh, Cincinnati, Chicago and St. Louis Railroad Company

1891

by Pittsburgh (Pa.).

1897