Forest Service. 1994. National Strategic Plan For Air Resource Management: Ensuring Effective Integration of Air Resource Considerations in Ecosystem Management of Natural Resources. U.S. Department of Agriculture, Forest Service, Washington Office, Air Resource Management Program. 11 pp.

Fox, Douglas G.; Bartuska, Ann M.; Byrne, James G.; Cowling, Ellis; Fisher, Rich; Likens, Gene E.; Lindberg, Steven E.; Linthurst, Rick A.; Messer, Jay; and Nichols, Dale S. 1989. A Screening Procedure to Evaluate Air Pollution Effects on Class I Wilderness Areas. General Technical Report RM-168. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO 80526. 36 pp.

Fox, Douglas G; Bernabo, J. Christopher; and Hood, Betsy. 1987. Guidelines for Measuring the Physical, Chemical, and Biological Condition of Wilderness Ecosystems. General Technical Report RM-146. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO 80526. 48 pp.

Forest Service. 1997. Air Resource Monitoring System Existing Data Set Listing: Identified list of exisiting data sets of interest to the Air Program. U.S. Department of Agriculture, Forest Service, Washington Office, Air Resource Management Program. 115 pp.