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Continue to ChatChicago and Northwestern Railroad Swing Bridge Map - Clinton County, IA https://www.yellowmaps.com/usgs/topo.cfm?map=ia-2000663-chicago-and-northwestern-railroad-swing-bridge
Chicago and Northwestern Railroad Swing Bridge Map - Clinton County, IA https://www.yellowmaps.com/usgs/topo.cfm?map=ia-2000663-chicago-and-northwestern-railroad-swing-bridge