Capt. Early's company marches in advance of army. They find main trail of Black Hawk's band near southern outlet of Lake Koshkonong. Camp is made one and one-half miles below the lake until July 6, 1832. Early's company is busy performing spy and scout duty.Johnston Journal, Black Hawk War Collection, Abraham Lincoln Presidential Library and Museum, Springfield, IL; John H. Wakefield, Wakefield's History of the Black Hawk War (Chicago: Caxton Club, 1908), 78-80.

Lincoln's mess is composed of his stepbrother John D. Johnston, G. B. Fanchier, George M. Harrison, privates, and First Corp. R. M. Wyatt.George M. Harrison to W. H. Herndon, no date, William H. Herndon Papers, Henry E. Huntington Library, San Marino, CA.