*He's a heck of a guy.
http://www.digibarn.com/stories/mike-riddle/index.html
DigiBarn Stories:
Mike Riddle & the Story of Interact, AutoCAD, EasyCAD, FastCAD & more
"Mike Riddle, the father of AutoCAD and innovator of much of what the CAD industry is today, gave us a wonderful recounting of the roots, technology, business and personalities of the early microcomputer-based CAD world. Thanks Mike for a tour de force de CAD and for filling such an important piece of the history of computing!"