Through Sept. 17. Sponsored by the John Deere Foundation, Hunt and Diane Harris Family Foundation, Paragon Commercial Interiors and US Bank, this exhibition features works by father-daughter duo Aernout and Teska Overbeeke. Dutch photographer and photojournalist Aernout took a trip with his wife in 1988 to photograph the river. His daughter Teska retraced her parent's steps 25 years later and discovered her own voice as a photojournalist. This exhibition includes over 50 images from these trips that celebrate the people and ways of life unique to the great artery at the heart of the country. Museum hours: 10 a.m. to 5 p.m. Tuesdays-Saturdays, Thursday evenings until 9 p.m. and noon to 5 p.m. Sundays. Thanks to the support of the Bechtel Trust and the John Deere Classic, museum admission will be free to all until Sept. 3.