The Stallman Typewriter and its smaller counterpart, the Stallman Pocket Typewriter, were invented by San Francisco native Ferdinand G. Stallman. Ferdinand stated that he planned on offering them for sale ca.1923, but, though he produced at least one prototype of each model, any actual commercial production is doubtful. Ferdinand lived briefly in Connecticut in his latter years then died alone in New York. He may have brought the Stallmans with him when he relocated from the West Coast, or maybe they're still in California.
Have some info about this typewriter? Have you found it? If yes, please email me at Antikey.Chop@gmail.com