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War Below the Canopy." National Parks 81, no. 1 (2007): 28-33.
"Variation in Overstory Nitrogen Uptake in a Small, High-Elevation Southern Appalachian Spruce-Fir Watershed." Canadian Journal of Forest Research 32, no. 10 (2002): 1741-1752.
"Understory Composition of Five Tsuga canadensis Associated Forest Communities in Great Smoky Mountains National Park." Natural Areas Journal 32, no. 3 (2012): 260-269.
"Understory Change in Spruce-Fir During the First 16-20 Years Following the Death of Fir In The Southern Appalachian Spruce-Fir Ecosystem: Its Biology and Threats. Gatlinburg, TN: Uplands Field Research Laboratory, 1984.
Two Decades of Change in a Great Smoky Mountains Spruce-Fir Forest." Bulletin of the Torrey Botanical Club 115, no. 1 (1988): 25-31.
"The Tsuga Search Project: Documenting and Preserving Superlative Eastern Hemlock. Eastern Native Tree Society, 2007.
Tree Species and Environment Associations within Hemlock-Silverbell Stands Treated for Hemlock Woolly Adelgid in Great Smoky Mountains National Park." Journal of the Torrey Botanical Survey 137, no. 4 (2010): 401-409.
"Third Annual Scientific Research Meeting, June 23-24, 1977 In Annual Scientific Research Meeting-National Park Service, Southeast Region. Gatlinburg, TN: U.S. Department of the Interior, National Park Service, 1977.
Is There Synchronicity in Nitrogen Input and Output Fluxes at the Noland Divide Watershed, a Small N-Saturated Forested Catchment in the Great Smoky Mountains National Park." The Scientific World Journal 1 (2001): 480-492.
"Terrain and Landform Influence on Tsuga Canadensis (L.) Carriere (Eastern Hemlock) Distribution in the Southern Appalachian Mountains." Castanea 75, no. 1 (2012): 1-18.
"Structural Characteristics and Canopy Dynamics of Tsuga Canadensis in Forests of the Southern Appalachian Mountains, USA." Plant Ecology 199, no. 2 (2008): 265-280.
"Structural Changes in the Red Spruce-Fraser Fir Forest. Knoxville, TN: University of Tennessee, 2004.
Status of the Balsam Woolly Aphid in the Southern Appalachians-1970. Asheville, NC: U.S. Forest Service, 1971.
Status of the Balsam Woolly Aphid in the Southern Appalachians - 1966. Asheville, N.C.: U.S. Forest Service, 1967.
Status of the Balsam Woolly Aphid in the Great Smoky Mountains National Park --- 1976 In Management Report. Gatlinburg, TN: Uplands Field Research Laboratory, 1976.
Status of the Balsam Woolly Aphid in North Carolina and Tennessee - 1964. Asheville, N.C.: U.S. Forest Service, 1965.
Status of the Balsam Woolly Aphid in North Carolina and Tennessee - 1965. Asheville, N.C.: U.S. Forest Service, 1966.
The Status of the Balsam Woolly Aphid in North Carolina and Tennessee. Asheville, NC: U.S. Forest Service, 1963.
Status of the Balsam Woolly Aphid Adelges piceae (Ratz.) in the Southern Appalachians-1972. Asheville, NC: U.S. Forest Service, 1973.
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.
Spruce-fir Forests of Eastern North America." In Ecology and Decline of Red Spruce in the Eastern United States, 3-39. Vol. 96. New York, NY: Springer-Verlag, 1992.
"Spectral Response and Spatial Pattern of Fraser fir Mortality and Regeneration, Great Smoky Mountains, USA." Plant Ecology 156, no. 1 (2001): 59-74.
"Spatial, Temporal, and Tri-trophic distribution of imidacloprid, olefin and 5-hydroxy and their effect on hemlock woolly adelgid, Adelges tsugai Annand, (Hemiptera: Adelgidae). Vol. PhD. University of Tennessee, 1975.
Spatial Distribution of Hemlock Woolly Adelgid Induced Hemlock Mortality in the Southern Appalachians." Open Journal of Forestry 4, no. 5 (2014): 492-506.
"Southern Appalachian Red Spruce--Fraser Fir Forests In Analyses of Great Smoky Mountain Red Spruce Tree Ring Data. New Orleans, LA: U.S. Department of Agriculture, Forest Service,, 1988.