You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place At jct of Harrys Valley & Tram Rds, Rothrock State Forest, West Twp, Pine Grove Mills Quad. Remove constraint Place: At jct of Harrys Valley & Tram Rds, Rothrock State Forest, West Twp, Pine Grove Mills Quad. Place Huntingdon Remove constraint Place: Huntingdon Place Pennsylvania Remove constraint Place: Pennsylvania