(Observatory, MI-82-115) at Lincoln Park High School in Lincoln Park, Wayne County, MI. Southfield Rd. E. 0.2 miles from jct with I75 exit 41, S. on Lafayette Blvd 0.45 miles, W. on Champaign Rd. 0.1 miles to the bldg on the S. side of the road. (N42 14.749 W83 11.213) Photo by Mark Comstock & Kim Flanery 7-23-21.