1839
A steamboat made a trip up the Rock River, taking on passengers and pushing as far up as Jefferson.
The evidence
“The boat succeeded admirably, and went on beyond the present site of Janesville, whore it spent some time, and then returned to the Mississippi. In 1839 there was another steamboat trip. On this occasion the boat took on passengers at the different " points," and pushed her way up as far as Jefferson.”
1856-history-of-rock-county/24-rock.md, PDF p. 162 / book p. 146
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. 162 / book p. 146) · open the whole page “In 1839, another steamer made its way up the river, taking on passengers at different points, pushing its way as far up as Jefferson. In 1844, a steamboat from St.”
1879-history-of-rock-county/10-rock-county-ch04-early-maps-courts-railroads.md, PDF p. 356 / book p. 360
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 · may repeat 1856-history-of-rock-county, so not counted as independent
On the printed page (PDF p. 356 / book p. 360) · open the whole page