French mathematician and astronomer (1749–1822). ALS in French, signed “Delambre,” one page, 5.75 x 7.5, Institut de France, Academie Royale des Scienca letterhead, February 18, 1820. Untranslated letter to a colleague. Second integral page bears an address panel in Delambre’s hand. In very good condition, with intersecting mailing folds, light wrinkling and toning, and a small area of paper loss to top edge. RRAuction COA.
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