This bibliography is designed to assist educators in establishing an outdoor classroom for environmental education. A process is detailed by which school districts can effectively and efficiently develop a site on or near the school. The first step involves organizing a planning committee, enlisting administrative support, and developing a budget. In the second step a site is chosen and mapped with the assistance of the United States Geological Survey, Soil Conservation Service, and the Department of Natural Resources. The booklet lists locations and general features of different ecosystems: forests, marsh, swamp, bog, water areas, meadow, prairie, cultivated land, and state-owned land. In step three a composite map is drawn showing major physical, cultural, and natural features. A chart is constructed for step four matching units with study locations. The booklet also includes suggestions for managing and maintaining the site, a list of available outdoor activities and audio-visual materials, and a bibliography. (MR)