(37' x 25', 1935, IA-07-13) NW of La Porte City, Big Creek Township, Black Hawk County, IA. US218 NW 2.25 miles from jct with US218 (Commercial St.) in La Porte City, W. on Eagle Rd. 0.9 miles to the crib on the S. side of the road at 6124. (N42 20.309 W92 14.211) Photo by Jack & June Schmidt 7-1-12.