1842
Harrison Stebbins opened the first select school in Janesville — the passages give two readings: either in the latter part of 1841 or in the beginning of 1842.
Rock CountyGrade A · 1 independent source
The evidence
“Harrison Stebbins, now of the town of Porter, I think opened the first select school in Janesville, cither in the latter part of the year 1841, or in the beginning of 1842. Yours truly,”
1856-history-of-rock-county/04-correspondence-pioneer-letters.md, PDF p. 53 / book p. 35
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. 53 / book p. 35) · open the whole page