September 14, 1848
Levi Alden became sole publisher and editor of the Janesville Gazette.
The evidence
“G. Grattan appeared thereafter as joint proprietor, till the 14th of September, 1848, when Mr. Alden became solo publisher as well as proprietor. On the 7th of December, 1848, Mr. Chas.”
1856-history-of-rock-county/25-city-of-janesville.md, PDF p. 207 / book p. 187
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. 207 / book p. 187) · open the whole page “The fourth volume was begun with the issue of September 14, 1848, under the Mentorship of Levi Alden, who was announced as editor and proprietor, succeeding the firm of Alden & Gratton. The latter gentleman, having dissolved his connection with the Gazette, united his fortunes with those of a Mr.”
1879-history-of-rock-county/11-rock-county-ch05-press-institutions-tragedy.md, PDF p. 388
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. 388) · open the whole page