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• 79 Great Lakes Maritime History
• 79 Wisconsin Collection

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• 79 Still image

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• 67 Great Lakes
• 65 Steamboats
• 28 Minnesota
• 27 Duluth
• 25 Great Lakes Towing Company
• 21 Harbors
• 19 Marine Iron & Shipbuilding Company
• 15 Wooden boats
• 13 Bulk carrier cargo ships
• 12 Great Lakes (North America)
• 12 Screw tug
• 11 Lake steamers
• 8 United States. Army. Corps of Engineers
• 7 Bridges
• 7 Ships
• 6 Duluth Ship Canal
• 6 Screw bulk freighter
• 5 Barges
• 5 U.S. Army United States. Army. Corps of Engineers
• 4 Fires and fire prevention
• 4 Lake Superior
• 3 Ice on rivers, lakes, etc.
• 3 Ice-breaking vessels
• 3 Lighthouses
• 3 Refloating of ships
• 3 Ship: Mataafa (constructed 1899)
• 2 Dredges
• 2 Duluth, Missabe & Iron Range Railroad Company
• 2 Fires and fire protection
• 2 Grain elevators

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• 48 Duluth (Minn.)
• 19 Great Lakes (North America)
• 9 Superior
• 9 Wisconsin
• 8 Superior (Wis.)
• 2 Superior, Lake
• 1 Saint Louis River (Minn. and Wis.)