1. Albanese, C. L. 1990. Nature Religion in America: from the Algonkian Indians to the New Age. Chicago: University of Chicago Press.
2. Alley, R. B. 2014. The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future. Updated Edition. Princeton: Princeton University Press.
3. Anderson, R. S., R. B. Davis, N. G. Miller, and R. Stuckenrath. 1986. “History of late- and post-glacial vegetation and disturbance around Upper South Branch Pond, northern Maine” Canadian Journal of Botany64: 1977–1986.
4. Barrett, G. W., T. L. Barrett, and J. Wu. 2015. History of Landscape Ecology in the United States. New York: Springer-Verlag.
5. Barton, A. M., A. S. White, and C. V. Cogbill. 2012. The Changing Nature of the Maine Woods. Durham, NH: University of New Hampshire Press.