October 1, 1855
Mr. Brown associated Hon. James Armstrong with him in publishing the paper, under the firm of Brown & Armstrong.
BeloitGrade A · 1 independent source
The evidence
“Mr. Bunner left, Feb. 21st., 1855, and Mr. Brown continued the paper alone until Oct 1st, 1855, when he associated Hon. James Armstrong with him, under the firm of Brown & Armstrong, by whom it is published at the present time.”
1856-history-of-rock-county/25-city-of-janesville.md, PDF p. 208 / book p. 188
Guernsey, Orrin, and Josiah F. Willard, editors. History of Rock County, and Transactions of the Rock County Agricultural Society and Mechanics' Institute. Janesville, Wis.: William M. Doty & Brother, 1856. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871593.
Grade A: Found on a page of one of our sources
On the printed page (PDF p. 208 / book p. 188) · open the whole page