One resource for Prang chalk: http://www.enasco.com/product/9707123
For chalk and other Waldorf teaching supplies: http://www.mercurius-usa.com/index.php
A great resource page for Waldorf Teachers with a photo gallery: http://www.waldorfteachers.com/gallery/Chalkboard+Drawing/
For some amazing chalkboard art: http://www.tafel.ws/neues.html
Another great site for beautiful chalkboard drawings: http://www.waldorf-ideen-pool.de/index.php?aid=2484
BLACKBOARD SKETCHING By FREDERICK WHITNEY: http://www.kellscraft.com/BlackboardDrawings/BlackboardSketchingContentPage.html
Finser, T. M. (1994). School as a journey: the eight-year odyssey of a Waldorf teacher and his class. Hudson, N.Y.: Anthroposophic Press.
Harwood, A. C. (2001). The recovery of man in childhood: a study of the educational work of Rudolf Steiner (2nd ed.). Great Barrington, Mass.: Myrin Institute.
Koepke, H. (1989). Encountering the self: transformation & destiny in the ninth year. Hudson, N.Y.: Anthroposophic Press.
Petrash, J. (2002). Understanding Waldorf education: teaching from the inside out. Beltsville, MD: Gryphon House.
Rawson, M., & Richter, T. (2000). The educational tasks and content of the Steiner Waldorf curriculum . Forest Row, Sussex: Steiner Waldorf Schools Fellowship.
Rawson, M., & Masters, B. (2000). Towards creative teaching: working with the curriculum of classes 1-8 in Steiner Waldorf schools. Forest Row, Sussex: Steiner Waldorf Schools Fellowship Publications.
Spock, M. (1985). Teaching as a lively art (2nd ed.). Spring Valley, N.Y.: Anthroposophic Press.
Steiner, R. (1996). The education of the child and early lectures on education . Hudson, N.Y.: Anthroposophic Press.
Steiner, R. (1997). Discussions with teachers: fifteen discussions with the teachers of the Stuttgart Waldorf School, August 21-September 6, 1919 : three lectures on the curriculum, September 6, 1919. Hudson, NY: Anthroposophic Press.
Steiner, R. (1997). The essentials of education . Hudson, NY: Anthroposophic Press.
Steiner, R. (2000). Practical advice to teachers . Great Barrington, MA: Anthroposophic Press.
Steiner, R. (2004). A modern art of education: lectures presented in Ilkley, Yorkshire, August 5-17, 1923 (Rev. ed.). Great Barrington, MA: Anthroposophic Press.
Steiner, R. (2007). Balance in teaching: Stuttgart September 15-22, 1920 and October 15-16, 1923. Great Barrington, MA: Steiner Books.
Sylwester, R. (1998). Art for the brain’s sake. Educational Leadership 56 (3), 31-35
Waldorf schools, volume 2: upper grades and high school. (1993). Spring Valley, NY: Mercury Press.
Whitney, F. (1908). Blackboard sketching, . Springfield, Mass., New York [etc.: Milton Bradley Co..