The Milwaukee & Waukesha Railroad Company was incorporated.

The evidence

• “Between the years 1838 and 1841, the territorial legislature of Wisconsin chartered several railroad companies, but with the exception of the " Milwaukee & Waukesha Railroad Company,'' incorporated in 1847, none of the corporations thus created took any particular shape. The commissioners named in its charter met November 23, 1847, and elected a president. Dr.”

  1879-history-of-rock-county/04-wisconsin-railroads-commerce-health-statistics.md, PDF p. 169

  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.

  Grade A: Found on a page of one of our sources