Mushrooms of the Great Lakes region: the fleshy, leathery, and woody fungi of Illinois, Indiana, Ohio, and the southern half of Wisconsin and of Michigan by Verne Ovid Graham. The author with help of many others, has examined hundreds of specimens over a period of years. The softer forms, not easily compared with dried specimens, were repeatedly identified and their characteristics checked against the best available descriptions. In many cases additional, field notes, helpful for identification, have been included with the descriptions. This early work by Verne Ovid Graham was first published in 1944 and we are now republishing it with a brand new introduction.