You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place ½ mi. W. of North Point Rd. near S. end of Grass Lake ca. 4.5 mi. N.E. of Alpena. Alpena Twp. Hamilton Road. Remove constraint Place: ½ mi. W. of North Point Rd. near S. end of Grass Lake ca. 4.5 mi. N.E. of Alpena. Alpena Twp. Hamilton Road. Topic Poales Remove constraint Topic: Poales