Douglas Engelbart Douglas Engelbart Douglas Engelbart Douglas on ibiblio.org Richard Canfield Douglas Elgelbart Douglas Engelbart Douglas Englebart http://www.ibiblio.org/pioneers/englebart.html Doug Engelbart’s Douglas Englebart Doug Englebart Douglas on ibiblio.org Douglas Engelbart Douglas Engelbart’s pioneering work Doug Engelbart (source) Douglas Engelbart Douglas Engelbart Douglas on ibiblio.org http://www.ibiblio.org/pioneers/englebart.html Douglas Engelbart’s pioneering work Douglas Engelbart’s pioneering work Doug Engelbart Doug Englebart Douglas Engelbart’s pioneering work Douglas Engelbart Richard Canfield Richard Canfield Douglas Engelbart’s pioneering work Engelbart