You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Big Lake Conservation Area, ca 3.2 mi east of the inter of Rt NN & Co Rd No 222. Charleston 7.5' Quad. Remove constraint Place: Big Lake Conservation Area, ca 3.2 mi east of the inter of Rt NN & Co Rd No 222. Charleston 7.5' Quad. Topic Carex Remove constraint Topic: Carex