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1. Aerial Bridge: Proposed Suspended Car Transfer Over Ship Canal at Duluth, Minnesota

2. Aerial Bridge: Proposed Changes in Tower Suspended Car Transfer Over Ship Canal at Duluth, Minnesota

3. Aerial Bridge: Details of Traveler Suspended Car Transfer Over Ship Canal, Duluth, Minnesota

4. Aerial Bridge: Details of Traveler Framing at Top Suspended Car Transfer Ship Canal, Duluth, Minnesota

5. Aerial Bridge: Detail of Car Suspended Car Transfer Over Ship Canal, Duluth, Minnesota

6. Aerial Bridge: Detail of Car Suspended Car Transfer Over Ship Canal at Duluth, Minnesota

7. Aerial Bridge: Design for Suspended Car Transfer Over Ship Canal, Duluth, Minnesota

8. Wagon boarding aerial bridge, Duluth, Minnesota

9. Ice covered south pier, Duluth, Minnesota

10. Constructing foundation for aerial bridge, Duluth, Minnesota

11. Aerial ferry bridge, Duluth, Minnesota

12. Aerial Bridge: Whaleback Leaving Duluth-Superior Harbor Loaded With Ore, Duluth, Minnesota

13. Aerial Bridge: View of Minnesota Point, Duluth, Minnesota

14. Aerial Bridge: U.S. Ship Canal Duluth, Minnesota

15. Aerial bridge under construction, Duluth, Minnesota

16. Aerial Bridge: Structural Details, End View, Part Side Elevation, Duluth, Minnesota

17. Aerial Bridge: Strain Diagram, Duluth, Minnesota

18. Aerial Bridge: Steamer Huronic Entering Duluth-Superior Harbor, Duluth, Minnesota

19. Aerial Bridge: Entrance To Duluth-Superior Harbor, Duluth, Minnesota

20. Aerial Bridge: Entrance To Duluth-Superior Harbor, Duluth, Minnesota

21. Aerial Bridge Duluth, Minnesota

22. Aerial Bridge Duluth, Minnesota

23. Aerial Bridge Duluth, Minnesota

24. Aerial Bridge, Duluth, Minnesota

25. Aerial Bridge: Aerial Bridge Over Duluth-Superior Ship Canal, Duluth, Minnesota

26. Aerial Bridge: Aerial Bridge over Duluth-Superior ship canal, Duluth, Minnesota

27. Aerial Bridge: Aerial Bridge by night Duluth Superior harbor, Duluth, Minnesota

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