http://www.melodys.co.nz/html/history_of_nail_care.html
http://www.reachoutmichigan.org/funexperiments/agesubject/lessons/beakman/fingernail.html
http://www.melodys.co.nz/html/caring_for_your_nails.html
http://nhnh.essortment.com/athomemanicure_rjsq.htm
http://www.nunails.com/products1.html
http://en2.wikipedia.org/wiki/Keratin
http://www.hyperdictionary.com/medical/keratin
http://www.teenhealthfx.com/answers/376.html
http://www.pg.com/science/skincare/Skin_tws_37.htm
http://www.cheminst.ca/ncw/experiments/2001_growing_fingernails_e.htm
Interview with Kip Sturgill, Ph. D
http://www.madsci.org/posts/archives/dec2000/976306105.Ch.r.html
Credits also given to the Cutex Company
"Acetone" Microsoft(R) Encarta(R) 97 Encyclopedia. (c) 1993-1996 Microsoft Corporation.
http://www.atsdr.cdc.gov/tfacts21.html