(Manatee Mailbox) E. of Mt. Clemens, Harrison Township, Macomb County, MI. S River Rd. E. 3.95 miles from jct with the I94 overpass, S. on Lakeshore Dr. 1.3 miles to the mailbox on the E. side of the road at 37934. (N42 34.537 W82 47.128) Photo by Mark Comstock & Cathy Wright & Peyton Blandm & Becki Spangler 5-6-26.