(Blueberry Knoll, OH-04-18) SE of Ashtabula, Sheffield Township, Ashtabula County, OH. OH193 S. 2.4 miles from jct with I80 exit 235 E. of Ashtabula, W. on Plymouth Gageville Rd. 2.1 miles to the quilt on the N. side of the road at 2349. Karla Gadley. (N41 50.315 W80 42.180) Photos by Jack & June Schmidt 6-22-15.