(Iris Patch, TN-56-18) in Red Boiling Springs, Macon County, TN. TN151 (Main St.) SE (curves E.) 0.55 miles from jct with TN56 (Main St.) to the quilt on the N. side of the road at 500. Doyle & Lucille Smith. (N36 31.739 W85 50.510) Photos by Jack & June Schmidt 7-10-18.