French neo-impressionist painter (1863-1935) who, working with Georges Seurat, helped develop the Pointillist style. ALS in French, signed “P. Signac,” one page, lightly-lined, 5 x 8, Chalet des Peupliers letterhead, September 10, 1900. Untranslated letter to an unidentified recipient, with Signac crossing out two portions of the letterhead. Double-matted and framed to an overall size of 17.25 x 14.5. In fine condition, with central horizontal and vertical folds. RR Auction COA.