Page 87 of the 1988 reprint of Schooley's 1937 "Centennial History of Audrain County" =
"Mr. Locke as a boy, moved on Jan. 1, 1864...to their home on West Love Street..The boys of the neighborhood played 'soldier' and 'war' on the spot where the tents stood, where the Union troops under Grant were encamped.
This was at the west end of Jackson Street, where it now intersects Missouri Ave. and the tents stood in rows.
The biggest spot in the sod, where the boy whose day it was to be 'general' had headquarters for the day, was the spot where Colonel Grant's tent had stood."