(Twisted Log Cabin, IA-38-12) NNW of Reinbeck, Black Hawk Township, Grundy County, IA. U Av. N. 3.4 miles from jct with IA175 (Diagonal Rd.) W. of Reinbeck to the quilt on the W. side of the road at 22128. Arlyn Billerbeck. (N42 22.920 W92 37.797) Photos by Jack & June Schmidt 7-8-12.