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Out of Sight: Haze in Our National Parks ; How Power Plants Cost Billions in Visitor Enjoyment. Cambridge, MA: Abt Associates , 2000.
"Seedling Insensitivity to Ozone for Three Conifer Species Native to Great Smoky Mountains National Park." Environmental Pollution 108, no. 2 (2000): 141-151.
The Wild East: A Biography of the Great Smoky Mountains. Gainesville, FL: University Press of Florida, 2000.
"Application of a Color-Appearance Model to Vision Through Atmospheric Haze." Color Research and Application 24, no. 2 (1999): 112-120.
"Mature Black Cherry Used as a Bioindicator of Ozone Injury." Water, Air, and Soil Pollution 116, no. 1-2 (1999): 261-266.
"Scientists study air quality around Great Smoky Mountains." Bulletin of the American Meteorological Society 80, no. 10 (1999): 2115-2117.
"Analysis of Ammonia and Aerosol Concentrations and Deposition Near the Free Troposphere at Mt. Mitchell, NC, USA." Atmospheric Environment 32, no. 3 (1998): 353-358.
Inventorying and Monitoring the Amphibians of Great Smoky Mountains National Park: Progress Report. U.S. Geological Survey, Florida Caribbean Science Center, 1998.
"On a Clear Day." National Parks 71, no. 11-12 (1997): 26-29.
"Evaluation of Ozone Injury on Foliage of Black Cherry (Prunus serotina) and Tall Milkweed (Asclepias exaltata) in Great Smoky Mountains National Park." Environmental Pollution 95, no. 1 (1997): 13-18.
Lichen Inventory and Monitoring at Great Smoky Mountains National Park, Kings Mountain National Military Park and Shiloh National Military Park: Part I; Lichens of Great Smoky Mountains National Park. Bowling Green State University, 1997.
"Views from America's Parks: Great Smoky Mountains." Forum for Applied Research and Public Policy 12, no. 1 (1997): 15-19.
Air Pollution Issues Great Smoky Mountains National Park In EPA National Air Pollutant Emission Trends, 1990-1994., 1996.
Effects of Hypothetical NOx Source in East Tennessee on the Ozone Concentrations Impacting the GSMNP. Knoxville, TN: University of Tennessee, 1996.
Characterization of Secondary Minerals Formed as the Result of Weathering of the Anakeesta Formation, Alum Cave, Great Smoky Mountains National Park, Tennessee In U.S. Geological Survey Open File Report. Reston, VA: U.S. Department of the Interior: U.S. Geological Survey, 1995.
Abstracts of the Nineteenth Annual Scientific Research Meeting In Annual Scientific Research Meeting-National Park Service, Southeast Region. Gatlingburg, TN: U.S. Department of the Interior, National Park Service, 1994.
"Clearing the Air at Great Smoky Mountains National Park." Ecological Applications 4, no. 4 (1994): 690-701.
"Throughfall Studies of Deposition to Forest Edges and Gaps in Montane Ecosystems." Biogeochemistry 19, no. 3 (1993): 173-194.
"Tranquility, Tourism and Trouble: The Great Smokies Have It All." The Smithsonian 24, no. 5 (1993): 21-22.
Great Smoky Mountains National Park Cove Mountain: 1989 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, Co: U.S. Department of the Interior, National Park Service, 1992.
Great Smoky Mountains National Park Cove Mountain: 1990 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, Co: U.S. Department of the Interior, National Park Service, 1992.
Great Smoky Mountains National Park Look Rock: 1989 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, Co: National Park Service, 1992.
Great Smoky Mountains National Park Look Rock: 1990 Gaseous Pollutant and Meteorological Monitoring Annual Data Summary. Denver, CO: U.S. Department of the Interior, National Park Service, 1992.
Lichen Monitoring at the Great Smoky Mountains National Park. International Plant and Pollution Research Laboratory, Estonian Academy of Sciences, 1992.
"Seasonal variation in nitrate reductase activity in needles of high-elevation red spruce trees." Canadian Journal of Forest Research 22, no. 3 (1992): 375-380.
