• JA Silander and DM Kepleis (1999) The invasion ecology of Japanese Barberry (Berberis Thunbergii) in the New England Landscape, Ecological Invasions 1: 189-201
  • USDA Natural Resource and Conservation service Plant Guides (available online): Eastern Hemlock, White Pine
  • Ohio Department of Natural Resources Website (Division of Forestry): Black Birch
  • White Birch: Uchytil, Ronald J. 1991. Betula papyrifera. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer)