(SD-49-11) N. of Sioux Falls, Mapleton Township, Minnehaha County, SD. Cliffe Av. N. 0.75 miles from jct with I90 exit 399, W. on 72nd St. 0.1 miles, N. on 10th Av. 0.2 miles to the house on the W. side of the road at 6121. (N43 37.149 W96 42.807) Photo by Mark Comstock 7-22-24.