A Mr. Hawkins of Frankford, near Philadelphia, has invented a machine, which he calls a polygraph, and which carries two, three, or four pens.
"Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson"
Thomas Jefferson
P. S. The sheets which you receive are those of the copying-pen of the polygraph, not of the one with which I have written.
"Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson"
Thomas Jefferson
I think it the finest invention of the present age, and so much superior to the copying machine, that the latter will never be continued a day by any one who tries the polygraph.
"Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson"
Thomas Jefferson