A Sand County Almanac by Aldo Leopold (1887 – 1948) was published posthumously in 1949 and describes the area around the author's home in Sauk County, Wisconsin. The "Sand County" of the title actually refers to the "sand counties" of Wisconsin, a habitat with sandy soils, not a specific county. Leopold was a wildlife management expert, who first worked for the Forest Service and then became Professor of Game Management at the University of Wisconsin–Madison.
The book itself is divided into three sections. The first section, "Sand County Almanac," is organized as an almanac, containing twelve chapters, each devoted to one of the months of the year. These chapters reflect on the ways in which the flora and fauna of the area change with the seasons.
The second section, "Sketches Here and There," gives personal accounts of places in North America, often mixed with autobiographical reminiscences.
The third section turns to philosophical conclusions about our relationship with the land and the future of habitat management strongly advocating conservation. His philosophy can be summed up with the quotation:
The land ethic simply enlarges the boundaries of the community to include soils, waters, plants, and animals, or collectively: the land. (p. 243)