Mr. Hugh Lee made the first survey, of the Rock River Valley Union Railroad, from Chicago to Fond du Lac.

The evidence

• “After the preliminaries, the work must have been taken hold of " in earnest," for in 1849, Mr. Hugh Lee made the survey of the Rock River Valley Union Railroad, which was designed to run from Chicago to Fond du Lac.”

  1879-history-of-rock-county/10-rock-county-ch04-early-maps-courts-railroads.md, PDF p. 381 / book p. 385

  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