Alden's brick yard operated (Janesville).

The evidence

• “Colab, Supt. 1849, Whittaker's woolen mill. Wheeler woolen factory, 1859. 1846, Alden 's brick yard. Frask, furniture factory. 1863, Hanson. 1864, Britton, Kimball, Ashcraft factory.”

  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