1. John McCarthy, Reminiscences on the history of time sharing, IEEE Annals of the History of Computing, Vol.14, No.1, pp.19–24, 1992.
2. PDP-1 from Wikipedia, See also Computer History Museum PDP-1 Restoration Project for pictures of PDP-1.
3. NR Narayana Murthy, A Better India: A Better World, Penguin Books, India, pp.3, 4, 2009 (Personal Communication onfirming that the Professor mentioned in the book is John McCarthy.)
4. John McCarthy (Computer Scientist)-Wikipedia.
5. First Hixon Symposium on’ Cerebral Mechanisms in Behavior’, Sept.1948. www.calteches.library.caltech.edu/923/1/Pump.pdf