William Grey Walter

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Dr. W. Grey Walter, CyberneticZoo, 2009-09-03

W. Grey Walter and his Tortoises, CyberneticZoo, 2011-06-06

The Grey Walter Online Archive, Archive.org, 

Grey Walter's Machina Speculatrix  

W. Grey Walter, pioneer in the electroencephalogram, robotics, cybernetics, artificial intelligence, Journal of Clinical Neuroscience, 2006-02-07

The Development and Significance of Cybernetics by William Grey Walter, Cosmonaut, 2021-10-13

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