post SOLD! The Malling-Hansen “Writing Ball,” An Example of the First Commercial Typewriter, Sold For (Scroll Down to See)Automata and MachinesMay 22, 2019August 8, 2019
post A Seriously Steampunk Writing Ball, the First Commercially Produced Typewriter, Could Command $100,000 at Auction Team BrekerAutomata and MachinesMay 13, 2019August 8, 2019