McLaughlin, Samuel B., T. J. Blasing, and D. J. Downing. "Two Hundred Year Variation of Southern Red Spruce Radial Growth as Estimated by Spectral Analysis: Comment." Canadian Journal of Forest Research 24, no. 11 (1994): 2299-2304.

Adams, Harold S., Samuel B. McLaughlin, T. J. Blasing, and D. N. Duvick. A Survey of Radial Growth Trends in Spruce in the Great Smoky Mountains National Park as Influenced by Topography, Age, and Stand Development. Oak Ridge National Laboratory: U.S. Department of Energy, 1990.

McLaughlin, Samuel B., D. J. Downing, T. J. Blasing, Edward R. Cook, and Harold S. Adams. "An Analysis of Climate and Competition as Contributors to Decline of Red Spruce in High Elevation Appalachian Forests of the Eastern United States." Oecologia 72, no. 4 (1987): 487-501.

Adams, Harold S., Steven L. Stephenson, T. J. Blasing, and D. N. Duvick. "Growth-trend Declines of Spruce and Fir in Mid-Appalachian Subalpine Forests." Environmental and Experimental Botany 25, no. 4 (1985): 315-325.