Bette Nesmith Graham
As an executive secretary at Texas Bank and Trust, Ms. Graham invented what would later become Liquid Paper. She started commercially selling her product in 1956. She later sold the company she started for almost $50 million.
http://en.wikipedia.org/wiki/Bette_Nesmith_Graham
Her other notable creation is her son, Michael Nesmith, former Monkee and producer. 
= new reply since forum marked as read
...knowing who she was and how brilliant she was, but was secretly hoping you'd mention Mike.
And I bought some of her invention just last week! 
Great pic of her and her son:
But I never got into the whole Elmer's Glue-on-your-hands thing, either. 
trust me, the glue is boring
Since I used to type (on a computer) for a living and my nails were always a mess.
use the highlighter after the LP
I've even seen women wearing sandals in the summer who paint heir toenails green! 
I really don't understand those who use red, looks like they're bleeding, as for the green... 