1857
Hanchett's block in Beloit, begun in October 1856, was finished.
BeloitGrade A · 1 independent source
The evidence
“[Hanchett's block, begun in October, 1856. was finished in 1857 and stood on the site of Mr. Battin's house, yard and peach trees at the northeast corner of Broad and State streets.”
1908-brown-rock-county/06-history-of-beloit.md, Vol. 1, PDF p. 181 / book p. 164
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. 181 / book p. 164) · open the whole page