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2. Alexander, S.J., McLain, R., Kim, Y.S., and Johnson, R. 1999. Recreational harvest of wild foods on the Gifford-Pinchot National Forest: resources and issues. Proceedings: Society of American Foresters 1999 National Convention SAF Publication 00–1. Bethesda, MD: Society of American Foresters.
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4. Antypas, A., McLain, R.J., Gilden, J., and Dyson, G. 2002. Federal nontimber forest products policy and management. In: E.T. Jones, R.J. McLain, and J. Weigand (Eds.), Nontimber forest products in the United States (pp. 347–374). Lawrence, KS: University Press of Kansas.
5. Blatner, K.A., and Alexander, S. 1998. Recent price trends for non-timber forest products in the Pacific Northwest. Forest Products Journal, 48(1): 28–34.