From the record
“The Jefferson Avenue Historic District in Janesville, Wisconsin is a historic neighborhood east of the downtown of mostly middle-class homes built from 1891 to the 1930s. It was added to the State and the National Register of Historic Places in 2006.”
Wikipedia article Jefferson Avenue Historic District (Janesville, Wisconsin), CC BY-SA 4.0.
One of 141 National Register listings published here for Rock County · listed in 2006 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article

