December 4, 1843
Henry Dodge took his seat for his second term as delegate at the commencement of the first session of the twenty-eighth Congress.
Nation and worldGrade A · 1 independent source
The evidence
“The term of two years for which Henry Dodge was elected as delegate, having expired at the close of the third session of the twenty-seventh congress, he was, on the twenty-fifth of September, 1843, re-elected, taking his seat for the first time on his second term at the commencement of the first session of the twenty-eighth congress, Monday, December 4, 1843. On the thirtieth of October of this year, George Floyd was commissioned by President Tyler as”
1879-history-of-rock-county/01-wisconsin-antiquities-indians-territory.md, PDF p. 46
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