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Lead in Vegetation, Forest Floor, and Soils of the Great Smoky Mountains National Park." Environment International 13, no. 3 (1987): 235-246.
"A Multivariate Analysis of Forest Communities in the Western Great Smoky Mountains National Park." American Midland Naturalist 118, no. 1 (1987): 107-120.
"Parks in Peril: On a Clear Day, You Can't See Forever Anymore." The Amicus Journal 10, no. 1 (1988): 3-5.
"Stand Characteristics Associated with Potential Decline of Spruce-Fir Forests in the Southern Appalachians In Proceedings of the US/FRG Research Symposium: Effects of Atmospheric Pollutants on the Spruce-Fir Forests of the Eastern United States and the Federal Republic of Germany. Burlington, VT: U.S.D.A. Forest Service, 1988.
Assessment of Forest Decline in the Southern Appalachian Spruce-Fir Forest, USA." In Air Pollution and Forest Decline: Proceedings of the 14th International Meeting for Specialists in Air Pollution Effects on Forest Ecosystems, International Union of Forest Research O, 239-44. Birmensdorf, Switzerland: Eidgenössische Anstalt für das forstliche Versuchswesen, 1989.
"Frost Hardiness of Picea rubens Growing in Spruce Decline Regions of the Appalachians." Tree Physiology 5, no. 1 (1989): 25-37.
"High Metal Contents Found in Fulico Septica (L.) Wiggers and Some Other Slime Molds (Myxomycetes)." Karstenia 29 (1989): 37-44.
"Effects of Acidic Precipitation on the Soil Chemistry and Bioavailability of Aluminum, Manganese, and Copper. Oak Ridge, TN: Oak Ridge National Laboratory, 1990.
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.
"Sensitivity of Native Plant Species to Elevated Levels of Ozone In Third Annual Southern Appalachian Man and the Biosphere Conference. Gatlinburg, TN: Tennessee Valley Authority, 1992.
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.
"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.
"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.
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.
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.
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