(39' x 26', 1947, IA-12-04) NE of Clarksville, Fremont Township, Butler County, IA. IA188 N. 4.4 miles from jct with Superior St. in Clarksville, E. on IA188 (140th St.) 3.7 miles to the crib on the N. side of the road at 31697. (N42 50.897 W92 36.009) Photo by Jack & June Schmidt 7-7-12.