The Mississippi-road charter was amended in 1853 to authorize branching at Delevan.

The evidence

• “Mississippi; but in 1853 was so amended as to authorize the branching of the road at Delevan, so that the south trunk shall pass through Clinton, Turtle and Beloit, thence south-west to the Mississippi at Savannah. The other' through Bradford, Johnstown, Harmony and Janesville, thence west to the Mississippi.”

  1856-history-of-rock-county/03-rock-county.md, PDF p. 45 / book p. 27

  Guernsey, Orrin, and Josiah F. Willard, editors. History of Rock County, and Transactions of the Rock County Agricultural Society and Mechanics' Institute. Janesville, Wis.: William M. Doty & Brother, 1856. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871593.

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