1852
The Janesville Iron Works (Novelty Works) were erected/established on River street by Joseph H. Budd.
The evidence
“Janesville Iron Works. — The crumhling walls of the old Novelty Works, on River street, near the cotton-factory, marks the spot where this institution stood. It was erected about 1852, by Joseph H. Budd, who turned out all kinds of machinery and farming implements, employing; from seventy-five to one hundred men.”
1879-history-of-rock-county/14-rock-county-ch08-janesville.md, PDF p. 562
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
On the printed page (PDF p. 562) · open the whole page “John Buob, 1853. Cold Spring brewery, 1872. 1852, Janesville Iron works, J. H.”
1908-brown-rock-county/00-front-matter-vol-1.md, Vol. 1, PDF p. 17
Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.
Grade A: Found on a page of one of our sources
On the printed page (Vol. 1, PDF p. 17) · open the whole page