(Schoolhouse, IA-12-35) S. of Shell Rock, Shell Rock Township, Butler County, IA. Willow Av. S. 4.0 miles from jct with Cherry St. SW of Shell Rock, E. on 280th St. 0.35 miles to the quilt on the N. side of the road at 32461. Fred & Judith Strotman. (N42 38.552 W92 35.220) Photos by Jack & June Schmidt 7-9-12.