[joehewitt]

There was a book written on Engelbart's work and his philosophies which I enjoyed reading many years ago:

Bootstrapping: Douglas Engelbart, Coevolution, and the Origins of Personal Computing http://www.amazon.com/Bootstrapping-Engelbart-Coevolution-Pe...

[ivanzhao]

I think this is a better book on him. Less history, more ideas: http://www.amazon.com/The-Engelbart-Hypothesis-dialogs-Dougl...