The consolidation of the Galena & Chicago Union and the Chicago, St. Paul & Fond du Lac companies was approved by legislative enactment, creating the Chicago & Northwestern Railway Company.

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The evidence

“The consolidation of the Galena & Chicago Union and the Chicago, St. Paul & Fond du Lac companies was effected and approved by legislative enactment in 1855, and a new organization called the " Chicago & Northwestern Railway Company " took their place.”
1879-history-of-rock-county/04-wisconsin-railroads-commerce-health-statistics.md, PDF p. 173
Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.
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