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| Hennepin Canal State Park posted Today's Throwback Thursday picture shows the Mitre Gate at Lock 28 in Colona with a railroad bridge and fishermen in the background. August 1951. |
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| Street View, Jun 2023 |
This topo map taught me abpit Lock #28 while I was studying the Rock Island Junction Tower.
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| 1953/57 Green Rock Quad @ 24,000 |
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| 1938 photo via Dennis DeBruler |
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