Construction of Fort Crawford, on the tract surveyed by Doty at Prairie du Chien, took place in 1830; the fort was built over 1829, 1830 and 1831.

The evidence

• “Doty by the government in the year 1829, and covered the front and main portions of farm lots numbered thirty-three and thirty-four, of the private land claims at Prairie du Chien, and comprised about one hundred and sixty acres. Fort Crawford was built on this tract in 1829, 1830 and 1 83 1. There was also a reservation of section eighteen, township seven, north of range four west, known as the Cattle Yard.”

  1879-history-of-rock-county/04-wisconsin-railroads-commerce-health-statistics.md, PDF p. 218 / book p. 222

  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