Unexampled System of Terminals
- Caption: Pittsburgh: Unexampled System of Terminals:  Miles of Harbor Line: All Water Route to Panama Canal.
- Notes: One of a series of stamps issued by the Pittsburg Dispatch. Size: approximately 2" x 1.5" (5cm x 4cm).
- Date: Approx. 1911-1922.
- From the Collections of the Pennsylvania Department,
- Carnegie Library of Pittsburgh.