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Photograph

Pontoon Railway Bridge, West Draw

Date: 1873
Description: Stereograph of John Lawler's pile-pontoon railway bridge over both channels of the Mississippi River at Prairie du Chien, and McGregor, Iowa. East draw, 39...
Photograph

Pontoon Railway Bridge, East Draw

Date: 1873
Description: Stereograph of John Lawler's pile-pontoon railway bridge over both channels of the Mississippi River at Prairie du Chien and McGregor, Iowa. The East Draw ...

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