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Description

Thomas Jefferson Polygraph of an Autograph Letter Signed " Th: Jefferson." One page, 7.5" x 9.5", Monticello; April 15, 1811. Addressed to George Jefferson, it reads in part:

"... I am very sensible of your kindness in having gone beyond my draughts, which I by no means intended. These were kept within the limits of the funds I then deemed on hand. the debt to Morris & Dunnington was contracted for the Bedford plantation & was to be paid from its crop. I had therefore engaged to M. & D. that they should receive it out of the proceeds of the first of the Bedford flour which should get to market. Griffin writes me he should send off 100. barrels on the 9th inst. and had the promise of the rest for a short day afterwards. This therefore as well as what is going from here will shortly replace your advance to M. & D. in whose favor I had delayed drawing till the Bedford flour should be down, because I wish to shew my thankfulness for your friendly dispositions by not making an abusive use of them..."

Invented by Englishman John Isaac Hawkins and patented in May 1803, the polygraph was a duplication device that allowed users to make a copy of a document at the same time it was being written. It was famously used by Thomas Jefferson, who described the machine as "the finest invention of the present age." Jefferson himself acquired his first polygraph in 1804, and later suggested design modifications to Charles Peale, the American patent rights owner. Jefferson's original polygraph can be found on display at his estate at Monticello.

Condition: Flattened mail folds and lightly toned throughout. Small amount of paper loss at the right edge, which is repaired on verso with tape.


Auction Info

Auction Dates
November, 2020
12th Thursday
Bids + Registered Phone Bidders: 13
Lot Tracking Activity: N/A
Page Views: 2,067

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Sold on Nov 12, 2020 for: $2,750.00
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