This set of three Illinois Dept of Conservation booklets from 1981 is a must-have for any nature enthusiast. The booklets cover the topics of spring, early summer, and mid-summer nature in the state of Illinois. Each booklet is a softcover wrap and is an original publication from the Illinois Dept of Conservation. The language of the booklets is English and they are categorized as antiquarian and collectible in the book and magazine category. Get your hands on these rare booklets and explore the beauty of nature in Illinois.