(Pot of Flowers, IA-12-27) N. of Clarksville, Jackson Township, Butler County, IA. Royal Av. N. 0.9 miles from jct with 180th St. on the NW side of Clarksville to the quilt on the W. side of the road at 17021. Carolyn Bohner. (N42 48.014 W92 40.796) Photos by Jack & June Schmidt 7-7-12.