How and when did the idea for ‘tactile mind’ happen?

5 years ago, Lisa J. Murphy was making tactile diagrams for vision impaired & blind childrens’ educational books, and thought “why not?”. Lisa had received a certificate in Tactile Graphics from the Institute for the Blind, and decided to use her new  knowledge with her own photographs of artistic nudes. Lisa wanted to challenge herself, and she began to create tactile pictures for adults. Over the next 2 years, her idea turned into a book consisting of 17 3-D pictures, with grade-one Braille accompaniment.