From The Phonographic World (New York), July 1886 –
Robert Ingersoll would go on to sell a variety of one- and two-dollar machines, and, according to a 1906 article in Printer’s Ink, he sold some 100,000 of these typewriters. Today, these machines are exceptionally rare and fetch thousands of dollars. It is evident that while Ingersoll sold thousands of these machines, few have survived.
From Printers’ Ink (1906):
The entire article can be found here.
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