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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

C.B.Q. Concrete Bridge

Date: 1922
Description: View across field of workers constructing a Chicago, Burlington and Quincy Railroad bridge.

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