The Experimental Forests and Ranges (EFRs) of the Forest Service, U.S. Department of Agriculture were established to represent major forest vegetation types of the United States, to provide guidelines for management of those forests and ranges, and to serve as "outdoor classrooms" for land managers to learn how to better manage their forests. Research data collected during the 100 years since the first experimental forest was established in 1908 can be used synthetically to address regional and continental scale questions related to forest and range management, key forest ecosystem processes, wildlife habitat requirements, watershed management, and other topics.