From A Bibliography of Alexandre Dumas père by Frank Wild Reed: In this year Dumas wrote a preface to a volume of verse, "Pleurs," by Mme. Desbordes-Valmore. Paris, Charpentier, 1833.
The preface in question was also printed, as part of an advertisement of the volume of poems, at the end of Vol. II. of Charpentier's collection of Dumas' plays, Paris, 1834.