April 1, 1843
The territorial legislature approved an act granting a charter to A. Hyatt Smith and others, authorizing a dam across Rock river at Janesville.
The evidence
“Accordingly, in 1842, he resolved to abandon his business, and move to Wisconsin, which he had previously visited on business, and, on the 22d of November, arrived in Janesville daring a tremendous snow-storm, and, being informed that the land on the west side of the river was for sale, purchased it, with a view to the improvement of the water-power, taking several other parlies into the transaction to gain monetary aid in making, the improvement. On the 1st of April, 1843,'l.he Territorial Legislature granted a charter to A. Hyatt Smith, William H.”
1879-history-of-rock-county/17-bios-janesville.md, PDF p. 718
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
On the printed page (PDF p. 718) · open the whole page “In 1843 the territorial legislature authorized by a charter granted to A. Hyatt Smith, Charles Stevens, W.”
1908-brown-rock-county/26-history-of-janesville.md, Vol. 2, PDF p. 20 / book p. 535
Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.
Grade A: Found on a page of one of our sources · may repeat 1879-history-of-rock-county, so not counted as independent
On the printed page (Vol. 2, PDF p. 20 / book p. 535) · open the whole page