(MI-81-105) W. of Ann Arbor, Scio Township, Washtenaw County, MI. Jackson Ave. W. 0.85 miles from jct. with I-94 exit 172, S. on Wagner Rd. 0.7 miles, right on access road 100 yds, right through parking lot 100 yds. to bldg. on E. (N42 16.549 W83 48.012) Photo by Mark Comstock 1-7-23.