IBM - 40 years ago this month, IBM announced the Memory Typewriter, which could store and recall up to 4,000 characters (about 1 typed page). | Facebook
IBM Wheelwriter: The Iconic Typewriter of the Modern Era - Typewriters.com, a division of Monroe Systems for Business
Lexmark IBM Wheelwriter 3000 Typewriter (Reconditioned)
IBM Memory Typewriter from the mid-1970s : r/typewriters