Gaines made a demonstration before Black Hawk's village, and the Indians withdrew that night to the west bank of the Mississippi.

The evidence

• “P. Gaines made a demonstration before Black Hawk's village June 25, 1831, which led those Indians to withdraw that night to the west bank of the Mississippi. June 30 they signed a treaty of peace with General Gaines and Governor Reynolds, agreeing never to return to the”

  1908-brown-rock-county/03-black-hawk-war.md, Vol. 1, PDF p. 45 / book p. 36

  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