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Photograph

Pile-Pontoon Railroad Bridge

Date: 
Description: Elevated view of the pile-pontoon railroad bridge across the Mississippi River at Prairie du Chien. The bridge was built and patented by John Lawler in 187...
Photograph

Chicago, Milwaukee, and St. Paul Railway Pontoon Bridge

Date: 1900
Description: Chicago, Milwaukee, and St. Paul Railroad pontoon bridge between Marquette, Iowa, and Prairie du Chien.
Postcard

Pontoon Bridge

Date: 1915
Description: Elevated view of Pontoon Bridge. Caption reads: "Largest Pontoon Bridge in the U.S. Scene at the Tri Cities, North and South McGergor and Prairie du Chien....
Photograph

Pontoon Railway Bridge

Date: 1910
Description: Slightly elevated view of the pontoon bridge construction. People are standing on and near the railroad tracks in the foreground.
Photograph

Railroad Bridge

Date: 
Description: View across water toward a railroad bridge, constructed of heavy steel that sits on massive stone supports. Wooded hills are in the background.

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