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Sale 58
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Lot 23
Jefferson, Thomas. Autograph Letter Signed "Th: Jefferson," one page, 9¾ x 7¾ in., Monticello, February 19, 1818. To Everard Hall regarding the importance of domestic salt manufactures and an invention of Mr. Hall's related to salt manufacture. Fine; light folds and toning. Another hand has noted at the bottom, in French, that the letter was "given to Mr. Alex. Vattemore by Mr. Samuel Peters of New Orleans May 10, 1840."
Jefferson wrote, in part: "…the experience of two wars has proved that the making of salt within ourselves is as important as the manufacture of gunpowder and arms… but I have so long withdrawn from all attention to things of that kind, and have particularly been so little acquainted with the construction of salt works, as to be unable to give you any opinion on the probable success of your invention. I know only that in Northern Europe they consider it essential to strengthen their water as much as possibl e by previous evaporation, and your machinery seems in theory to promise that, but it is experience alone which can determine that. I return you your drawing [not present] with my best wishes for the success of your enterprise…."
Although often characterized by historians as a strict agrarian, Jefferson understood well the need for domestic manufacturing. As secretary of state under Washington, he advocated raising tariffs to protect fledgling American industries from foreign competition. "Such duties having the effect of indirect encouragement to domestic manufacture of the same kind, may induce the manufacturer to come himself into these states, where cheaper subsistence, equal laws, and a vent of his wares, free of duty, may ensure him the highest profits from his skill and industry." Jefferson himself was an avid inventor, yet never took out a patent. Among his inventions was the correct form of the moldboard, and a curved iron plate attached to a plowshare that lifts, turns and pulverizes the soil. He also developed a revolving chair known to his political enemies as "Jefferson’s whirligig" and said it enabled him ". to look all ways at once.".
Estimated Value $20,000 - 25,000.
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