"Where Wizards Stay Up Late"[0] is a fascinating account of the invention of the internet (Licklider a major player). I found it to be _much_ more interesting than I expected from the subject material. Highly recommended.
Another good read is "Machines of Loving Grace" [1]. Much more focused on Artificial Intelligence (AI) vs. Intelligence Amplification (IA), but covers a lot of the work influenced by Engelbart and Licklider.
[0] http://www.amazon.com/Where-Wizards-Stay-Up-Late/dp/06848326...