The Hyatt House hotel in Janesville was opened for business.

The evidence

• “The Hyatt House, the most pretentious hotel building ever erected in Janesville, was also completed during 1857, being opened for business May 7, 1857. It occupied the site of the old Stevens House, burned in 1853, at the northwest corner of Milwaukee and Franklin streets.”

  1908-brown-rock-county/26-history-of-janesville.md, Vol. 2, PDF p. 41 / book p. 554

  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