You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Delta Remove constraint Place: Delta Place along road west of crossing of Ogontz River, 8-9 miles east of Rapid River Remove constraint Place: along road west of crossing of Ogontz River, 8-9 miles east of Rapid River Topic Gentianales Remove constraint Topic: Gentianales Topic Gentianopsis Remove constraint Topic: Gentianopsis Type still image Remove constraint Type: still image