The Rock County Agricultural Society and Mechanics' Institute held its Annual Cattle Show and Fair in Janesville

The evidence

• “Awarded by the Committee of Judges of the Rock County Agricultural Society and Mechanics' Institute, at their Annual Cattle Show and Fair, held at the Society's Grounds, in Janesville, Sept. 13th and 14th, 1854.”

  1856-history-of-rock-county/29-agricultural-society-1854.md, PDF p. 327 / book p. 303

  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