Here are some links of interest. Enjoy!
http://melungeon-studies.blogspot.com/2010/09/quadrule-indians-of-harlan-county.html
http://www.caves.org/conservancy/gsp/
http://en.wikipedia.org/wiki/Cumberland_Falls
http://www.melungeon-historical-societymhs.blogspot.com/
http://www.historical-melungeons.blogspot.com
http://jackgoins.blogspot.com/