Ted Nelson and Hypertext
top left: Laurel, Brenda: The Art of Human-Computer Interface Design, p190. Addison Wesley, Reading, Mass., 1990 amazon.de
top right: cover of Computer Lib/Dream Machines
bottom: Tim Berners-Lee (left) in tense discussion with hypertext pioneer Ted Nelson (right) behind Robert Cailliau's back (taken by Hakon Lie at the Advisory Committee meeting of the WWW Consortium, in Tokyo, June 1997)