The first public sale of Government lands in the Milwaukee land district was held, bringing into market land east of Rock River and Lake Koshkonong.

The evidence

• “Of course, in this district fell all the territory now included within the limits of Rock County. The Land Office was located at Milwaukee, where the first public sale of Government lands within the new district was held in the spring of 1839. This brought into market all of what is now Rock County that had not previously been disposed of, and, for the first time, that part lying east of Rock River and Lakp Koshkonong.”

  1879-history-of-rock-county/08-rock-county-ch02-mounds-indians-black-hawk-settlement.md, PDF p. 330

  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