You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Alpena Twp. T31N,R8E, Sec.21, SW1/4. 300ft. E. of Bagley St. 500 ft. N. of the Thunder Bay Riv. on W. side of Alpena Remove constraint Place: Alpena Twp. T31N,R8E, Sec.21, SW1/4. 300ft. E. of Bagley St. 500 ft. N. of the Thunder Bay Riv. on W. side of Alpena Topic Gentianopsis Remove constraint Topic: Gentianopsis