The Black Hawk Brewery was erected near the south end of Main street, Janesville (named "Morshe" in 1879 and "Marsh" in 1908 — both readings reported).

The evidence

• “Morshe & Wagoner erected the Black Hawk Brewery, near the south end of Main street, in 1856, and after a few years of unsuccessful work, sold the implements to John Roethinger, who- built more commodious quarters hard by, known as the Janesville Steam Brewery. The establishment was entirely destroyed by fire in 1872, insured for about one-third its value.”

  1879-history-of-rock-county/14-rock-county-ch08-janesville.md, PDF p. 561

  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

  

• “In 1853 John Buob built a brewery up the river north of the railroad and the next year following sold one-half of his interest to Anson Rogers. Marsh & Wagoner erected the Black Hawk brewery, near the south end of Main street, in 1856, and after a few years sold out to John Roethinger, who enlarged the plant and called it the Janesville Steam Brewery; it was then burned in 1872 and Mr. Roethinger built the Cold Spring Brewery on the same site and, after operating it for a few years, leased it to Rose & Bender.”

  1908-brown-rock-county/27-early-janesville-manufacturers.md, Vol. 2, PDF p. 93 / book p. 604

  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 · may repeat 1879-history-of-rock-county, so not counted as independent