A pioneering forester, sportsman, wildlife manager, and ecologist, Aldo Leopold was also a gifted writer whose farsighted land ethic is proving increasingly relevant in our own time. Now, his essential contributions to our literature––some hard-to-find or previously unpublished––are gathered in a single volume for the first time. Here is Leopold’s classic A Sand County Almanac, hailed––with Thoreau’s Walden and Carson’s Silent Spring––as one of the main literary influences on the modern environmental movement. Published in 1949, it is still astonishing today: a vivid, firsthand, philosophical tour de force. Along with Sand County are more than fifty articles, essays, and lectures exploring the new complexities of ecological science and what we would now call environmental ethics. Leopold’s field journals are presented here as they have never been before, newly transcribed from the original manuscripts (some of them previously unpublished), and accompanied by over 100 of his original drawings, photographs, and maps. Also unique to this volume is a selection of almost 100 of Leopold’s letters, both personal and professional––all but a few of them now published for the first time. A newly researched chronology and notes offer details about Leopold’s life, the conservation movement, and the contemporary contexts of his work. An “Index of Animals and Plants” and a general index are designed to aid the naturalist and student of Leopold.