Pierre-Ambroise Richebourg (1810-1875) Seated young man, c. 1845. 1/2 plate daguerreotype in original mount and frame. Label "Richebourg - Ingénieur Opticien - Quai de l'Horloge - 69. à Paris" and handwritten dedication in ink "À. C. Baudelaire. Souvenir de Louis-le-Grand. His friend, Frédéric". 13.3 x 10 cm (view) - frame Provenance : Former J. Beauchesne collection. The Frédéric who dedicates his portrait to Charles Baudelaire could be Gaston-Frédéric Lespiault, mathematician and physicist, former dean of the faculty of Bordeaux. Claude Pichois, an expert on the poet, states that the only Frédéric present at the Lycée Louis-le-Grand between 1836 and 1838 was Gaston-Frédéric Lespiault.