Beard, M.E., Crankshaw, O.S., Ennis, J.T., and Moore, C.E., 2001, Analysis of crayons for asbestos and other fibrous materials, and recommendations for improved analytical definitions--Executive summary: Research Triangle Park, N.C., Research Triangle Institute, Center for Environmental Measurements and Quality Assurance, Earth and Mineral Sciences Department, [informal report], 8 p. Engel, A.E.J., 1962, The Precambrian geology and talc deposits of the Balmat-Edwards district, northwest Adirondack Mountains, New York: U.S. Geological Survey Open-File Report 62-43, released June 15, 1962, 357 pages, 53 plates. Ross, Malcolm, Smith, W.L., and Ashton, W.H., 1968, Triclinic talc and associated amphiboles from Gouverneur mining district, New York: The American Mineralogist, v. 53, p. 751-769.
Van Gosen, B.S., Meeker, G.P., and Brownfield, I.K., 2004, Talc--Its relation to asbestiform amphiboles and the asbestos in crayons controversy, in Simandl, G.J., McMillan, W.J., and Robinson, N.D., eds., Industrial minerals with emphasis on Western North America, 37th Forum on the Geology of Industrial Minerals, May 23-25, 2001, Victoria, B.C., Canada: British Columbia Ministry of Energy and Mines, Geological Survey Branch, Paper 2004-2, p. 185-195.
Webber, J.S., Jackson, K.W., and Parekh, P.P., 2004, Reconstruction of a century of airborne asbestos concentrations: Environmental Science and Technology, v. 38, no. 3, p. 707-714.