1853
The Badger State Bank association, formed in 1850, was regularly organized and incorporated in 1853.
The evidence
“Dimock. The association was formed in 1850, but it was not regularly organized until 1853, when it was incorporated under the State banking laws by the above-mentioped gentlemen as the Badger State Bank. The capital stock was $50,000.”
1879-history-of-rock-county/14-rock-county-ch08-janesville.md, PDF p. 586 / book p. 590
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. 586 / book p. 590) · open the whole page “Central bank, 1852. Badger State, 1853. Janesville City, 1855.”
1908-brown-rock-county/00-front-matter-vol-1.md, Vol. 1, PDF p. 14
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
On the printed page (Vol. 1, PDF p. 14) · open the whole page