First brick block erected on Main street (Beloit).

The evidence

• “G. Fifield. 1844, First brick block. Main street.”

  1908-brown-rock-county/00-front-matter-vol-1.md, Vol. 1, PDF p. 15

  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