You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Along road with parallels Expressway on E. side, Hebron Swamp, Hebron Twp., ca. 11 mi. SE of Mackinaw City. Remove constraint Place: Along road with parallels Expressway on E. side, Hebron Swamp, Hebron Twp., ca. 11 mi. SE of Mackinaw City. Place Cheboygan Remove constraint Place: Cheboygan Place Michigan Remove constraint Place: Michigan Place North America Remove constraint Place: North America Place USA Remove constraint Place: USA Topic Alismatales Remove constraint Topic: Alismatales Topic Magnoliopsida Remove constraint Topic: Magnoliopsida