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1. Letter from the Secretary of War, in Response to Senate Resolution of April 12, 1892, relative to the proceedings of the board of officers convened to consider the construction of a bridge in Duluth.

2. Aerial Lift Bridge: Letter about bridge design, Duluth, Minnesota

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

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

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

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

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

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

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

10. Aerial Bridge: Strain Diagram, Duluth, Minnesota

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

12. Constructing foundation for aerial bridge, Duluth, Minnesota

13. Aerial Bridge Duluth, Minnesota

14. Aerial bridge under construction, Duluth, Minnesota

15. Ice covered south pier, Duluth, Minnesota

16. Aerial Lift Bridge under construction, Duluth, Minnesota

17. View of aerial bridge under construction, Duluth, Minnesota

18. Aerial ferry bridge, Duluth, Minnesota

19. Aerial ferry bridge, Duluth, Minnesota

20. Aerial Bridge Duluth, Minnesota

21. Aerial Lift Bridge from bay, Duluth, Minnesota

22. Aerial Bridge Duluth, Minnesota

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

24. Wagon boarding aerial bridge, Duluth, Minnesota

25. Northern Steamship Company's "North West" in Duluth harbor basin, Duluth, Minnesota

26. Aerial Bridge: Bird's Eye View of Duluth, Minnesota From Boulevard Drive

27. St. Louis River bridge construction, Duluth, Minnesota

28. Aerial Bridge: Aerial Bridge and Canal, Duluth, Minnesota

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

30. Aerial Bridge: Aerial Bridge Showing Car, Duluth, Minnesota

31. Aerial Bridge: An Aeroplane View Showing Entrance to Duluth-Superior Harbor, Duluth, Minnesota

32. Aerial Bridge, Duluth, Minnesota

33. Aerial Bridge: School Room Clay Model of Bridge, Duluth, Minnesota

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

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

36. Aerial Bridge: William E. Cory leaves Duluth, Minnesota

37. Aerial Lift Bridge, Duluth, Minnesota

38. Aerial Bridge: Log Rollers, Duluth, Minnesota

39. Aerial Bridge: Duluth Boat Club, Duluth, Minnesota

40. Aerial Bridge: Passenger Vessel North American Outbound, Duluth, Minnesota

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

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

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

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

45. Aerial Lift Bridge, Duluth, Minnesota

46. Aerial Lift Bridge, Duluth, Minnesota

47. Aerial Bridge: School Room Clay Model of Bridge, Duluth, Minnesota

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

49. Aerial Lift Bridge, Duluth, Minnesota

50. Excursion vessel "Tionesta" under the Aerial Lift Bridge, Duluth, Minnesota

51. Aerial Bridge: Bird's Eye View of Duluth, Minnesota

52. Remodeling of the Ferry Bridge at Duluth, Minnesota

53. Aerial Lift Bridge: Lake Avenue South Bridge Over Duluth Ship Canal for the City of Duluth, Minnesota

54. Aerial Lift Bridge: South Approach, Duluth, Minnesota

55. Aerial Lift Bridge, Duluth, Minnesota

56. Aerial Lift Bridge: Tug Boats in the harbor, Duluth, Minnesota

57. Aerial Lift Bridge: View of Superior Street Downtown, Duluth, Minnesota

58. Aerial Lift Bridge: Laker Entering Duluth Harbor, Duluth, Minnesota

59. Aerial Lift Bridge: View from Skyline Parkway, Duluth, Minnesota

60. Aerial Lift Bridge: View from Duluth hillside, Duluth, Minnesota

61. Aerial Lift Bridge: View of Duluth Canal and Harbor, Duluth, Minnesota

62. Aerial Lift Bridge: Ore boat exiting harbor, Duluth, Minnesota

63. Aerial Lift Bridge: Vessel exits the harbor, Duluth, Minnesota

64. Aerial Lift Bridge: Band performs at Aerial Bridge Event, Duluth, Minnesota

65. Aerial Lift Bridge: Saturday Evening Post features Aerial Bridge, Duluth, Minnesota

66. Aerial Lift Bridge: Aerial Lift Bridge and Ship Canal, Entrance to Duluth-Superior Harbor, Duluth, Minnesota

67. Aerial Lift Bridge: Aerial Lift Bridge Over Canal Entrance to Duluth-Superior Harbor, Duluth, Minnesota

68. Aerial Lift Bridge: Aerial View of Downtown Duluth, Duluth Harbor, and Canal Park, Duluth, Minnesota

69. Aerial Lift Bridge: Aerial View of Duluth Harbor and Downtown Duluth

70. Aerial Lift Bridge: Lift span up, Duluth, Minnesota

71. Aerial Lift Bridge: Tristan in the harbor, Duluth, Minnesota

72. Aerial Lift Bridge: View from Leif Erikson Park, Duluth, Minnesota

73. Aerial Lift Bridge: View from Skyline Parkway, Duluth, Minnesota

74. Aerial Lift Bridge: View of Duluth Harbor and West Duluth, Minnesota

75. Aerial Lift Bridge: View of Speedboat in the Harbor, Duluth, Minnesota

76. Aerial Lift Bridge: Ore Boat Entering Harbor, Duluth, Minnesota

77. Aerial Lift Bridge: View of Duluth Harbor, Duluth, Minnesota

78. Aerial Lift Bridge: Wide View of East End, Downtown, and Duluth Harbor, Duluth, Minnesota

79. Aerial Lift Bridge: Wide View of East End, Downtown, Canal Park, and Duluth Harbor, Duluth, Minnesota

80. Aerial Lift Bridge: Tug Office and Aerial Bridge, Duluth, Minnesota

81. Aerial Lift Bridge: Aerial View from Lake Superior, Duluth, Minnesota

82. Aerial Lift Bridge: View from Skyline Parkway, Duluth, Minnesota

83. Aerial Lift Bridge: View of Downtown Duluth and Harbor from the Hillside, Duluth, Minnesota

84. Aerial Lift Bridge: View of Duluth from Skyline Drive, Duluth, Minnesota

85. Aerial Lift Bridge: View of Duluth from Skyline Parkway, Duluth, Minnesota

86. Aerial Lift Bridge: Giant Ore Carrier Going Through Canal, Duluth, Minnesota

87. Aerial Lift Bridge: Passenger Vessel South American Departs Duluth, Minnesota

88. Aerial Lift Bridge: The Famous Aerial Lift Bridge, Duluth, Minnesota

89. Aerial Lift Bridge: View of Duluth Harbor from the East Hillside, Duluth, Minnesota

90. Aerial Lift Bridge: View from the Skyline, Duluth, Minnesota

91. Aerial Lift Bridge: View of Duluth Harbor, Duluth, Minnesota

92. Aerial Lift Bridge: View down Third Avenue West from Fourth Street, Duluth, Minnesota

93. Aerial Lift Bridge: View from Observation Hill, Duluth, Minnesota

94. Aerial Lift Bridge: View From Enger Park, Duluth, Minnesota

95. Aerial Lift Bridge: Ramon De Larrinaga arrives, Duluth, Minnesota

96. Aerial Lift Bridge: Water Sprays Welcome First Foreign Ship, Duluth, Minnesota

97. Aerial Lift Bridge: Water Sprays Welcome First Foreign Ship, Duluth, Minnesota

98. Aerial Lift Bridge: Seaway Celebration, Duluth, Minnesota

99. Aerial Lift Bridge: Seaway Celebration, Duluth, Minnesota

100. Aerial Lift Bridge: Seaway Celebration, Duluth, Minnesota