Kiessling, O. E. "Coal Mining in the South." Annals of the American Academy of Political and 153.1 (1931): 84-93. Print. Social Science Lewis, Ronald L. "Appalachian Restructuring in Historical Perspective: Coal, Culture and Social Change in West Virginia." 30.2 (1993): 299-308. Web. 20 Nov. Urban Studies ProQuest. 2014. Rehkopf, Linda. "Black lung disease." Ed. Marci Bortman, Peter Environmental Encyclopedia. Brimblecombe, and Mary Ann Cunningham. 3rd ed. Vol. 1. Detroit: Gale, 2003. Web. 20 Nov. 2014. Biography in Context. Snyder, Thomas D. Vol. 1. DIANE 120 years of American education: A statistical portrait. Publishing, 1993. Boston: Houghton Mifflin, 2014. The Reader's Companion to American History. “Tobacco.” Credo Reference. Web. 6 November 2014.v
Kiessling, O. E. "Coal Mining in the South." Annals of the American Academy of Political and Social Science 153.1 (1931): 84-93. Print. Lewis, Ronald L. "Appalachian Restructuring in Historical Perspective: Coal, Culture and Social Change in West Virginia." Urban Studies 30.2 (1993): 299-308. ProQuest. Web. 20 Nov. 2014. Rehkopf, Linda. "Black lung disease." Environmental Encyclopedia. Ed. Marci Bortman, Peter Brimblecombe, and Mary Ann Cunningham. 3rd ed. Vol. 1. Detroit: Gale, 2003. Biography in Context. Web. 20 Nov. 2014. Snyder, Thomas D. 120 years of American education: A statistical portrait. Vol. 1. DIANE Publishing, 1993. “Tobacco.” The Reader's Companion to American History. Boston: Houghton Mifflin, 2014. Credo Reference. Web. 6 November 2014.v