Mr. Tompkins sold out his interest (in a Beloit newspaper) in the latter part of September, and Mr. Alden became sole proprietor.

The evidence

• “Mr. Tompkins sold out his interest the latter part of September, 1846, and Mr. Alden became the solo proprietor, though the name of Mr.”

  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