(Diamond #2) SW of Ames, Washington Township, Story County, IA. Dakota Av. N. 0.25 miles from jct with US30 SW of Ames, E. on Mortensen Rd. 1.1 miles to the tower on the S. side of the road. (N42 00.656 W93 39.490) Photos by Jack & June Schmidt 7-10-12.