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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.
"Radial trends in cation ratios in tree rings as indicators of the impact of atmospheric deposition on forests." Canadian Journal of Forest Research 19, no. 5 (1989): 556-594.
"Trace Elements in Tree Rings: Evidence of Recent and Historical Air Pollution." Science 224, no. 4648 (1984): 494-497.
"Survey of Lead in Vegatation, Forest Floor, and Soila of the Great Smoky Mountains National Park In Environmental Sciences Division publication. Oak Ridge, TN: Oak Ridge National Laboratory , 1985.
Trace Metal Uptake and Accumulation in Trees as Affected by Environmental Pollution. Oak Ridge, TN: Oak Ridge National Laboratory, National Park Service, U. S. Department of the Interior, Undated.