You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Language UND Remove constraint Language: UND Place Ashtabula Remove constraint Place: Ashtabula Place North America Remove constraint Place: North America Place Ohio Remove constraint Place: Ohio Place Sheffield Swamp, 290 degrees & 1.8 miles from junction of OH Rt 193 & I-90, Sheffield Twp. Remove constraint Place: Sheffield Swamp, 290 degrees & 1.8 miles from junction of OH Rt 193 & I-90, Sheffield Twp.