(Stone House) S. of Caro, Indianfields Township, Tuscola County, MI. Mertz Rd. S. 3.0 miles from jct with Frank St. / Dayton Rd. on the E. side of Caro to the house on the W. side of the road at 2180. (N43 26.739 W83 23.144) Photos by Mark Comstock 8-10-25.