The “Sleep-learning” Machine . Dec 1921 Science & Invention cover art . Idea by the magazine’s publisher, Hugo Gernsback . Art signed Howard Brown .April 22, 2026
“The Rise of the Computerized School” 1969 Shigeru Komatsuzaki for the weekly manga magazine ‘Shōnen Sunday’ .April 22, 2026
Part of the lunar colony exhibit from the General Motors pavilion “Futurama 2” ride at the 1964 New York World’s Fair.April 22, 2026
