Important contributor to food and nutrition (1737–1813), who was a promoter of the potato as a food source and established the first mandatory smallpox vaccination. ALS in French, signed “Parmentier,” one page, 4.25 x 6, dated 24 thermidor [mid-August]. Untranslated letter written during the French Revolution, mentioning the paper money “assignats.” In fine condition, with small mounting remnant to reverse of second integral page and a touch of trivial soiling. RR Auction COA.