IPPY Award Gold Medalist for Great Lakes: Best Regional Non-Fiction   With more than 150 never-before-published duotone images, taken between 1892 and 1930, this collection explores the history of the Chicago River and the impact its reversal had on the watershed all the way to the Mississippi River. Offering the most complete description available of the river reversal, the stories told here provide a better understanding as to how it was done and why it was necessary, as well as how the water from the Chicago River is treated. The photographs were pulled from a glass plate photo collection taken by the Sanitary District of Chicago.