George Washington, Letter Signed, to the Reverend Doctor John Lathrop expressing support for voluntary associations, Mount Vernon, February 22, 1788, sold for $18,000 (above).
Thomas A. Edison, Letter Signed, to the Minister of Agriculture of Brazil, regarding vegetable fiber filament for the electric light, Menlo Park, NJ, circa December 1880, sold for $13,200 (above).
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