(Rainbow) at Cottonwood Farm NE of Dexter, Webster Township, Washtenaw County, MI. Mast Rd. NE 0.5 miles from jct with Huron River Dr. just N. of Dexter, continue NE (turns E.) on Daly Rd. 1.7 miles, N. on Zeeb Rd. 0.5 miles, E. on Farrell Rd. 1.0 miles to the mural on the S. side of the road at 4580. (N42 21.763 W83 49.453) Photos by Mark Comstock & Joan Berman 4-18-09.