You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Language UND Remove constraint Language: UND Place Alpena Twp. T31N,R8E,Sec.20,SE1/4 1/4 mi. due W. of Bagley St. bridge on old Potter Farm property on W. side of Alpena Remove constraint Place: Alpena Twp. T31N,R8E,Sec.20,SE1/4 1/4 mi. due W. of Bagley St. bridge on old Potter Farm property on W. side of Alpena