(Buffalo Ridge, IA-81-60) S. of Schaller, Eureka Township, Sac County, IA. Berlin St. S. 0.15 miles from jct with South St. on the S. side of Schaller to the quilt on the W. side of the road at 610. Huelman Corn Crib. (N42 29.517 W95 17.360) Photos by Jack & June Schmidt 7-17-12.