The residue of what became Rock County (the portion not southwest of Sugar River) was surveyed by the General Government in the first quarter of 1834.

The evidence

• “In its primitive state, about one quarter was prairie ; the balance, burr oak and white oak openings. As already mentioned, all that portion lying southwest of Sugar River was surveyed by the General Government during the first quarter of the year 1833 ; the residue, in the first quarter of 1834.”

  1879-history-of-rock-county/13-rock-county-ch07-town-histories.md, PDF p. 498

  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