You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Willow Island in the Kankakee River, just NW of Altorf, ca 7 mi NW of Kankakee. Remove constraint Place: Willow Island in the Kankakee River, just NW of Altorf, ca 7 mi NW of Kankakee. Topic Carex Remove constraint Topic: Carex