The painting's full title as given in the catalogue for the Paris Salon of 1861 is Répétition du "Joueur de flûte" et de "la Femme de Diomède," chez S. A. I. le prince Napoléon, dans l’atrium de sa maison, avenue Montaigne.
So dated from the speech's appearance in Le XIXe siècle, 13 April 1885, with the remark, "M. Boulanger, professor at the École des Beaux-Arts, has just addressed to his students a rather long letter, which we think interesting to reproduce."
"Necrologie", Courrier de l'Art, 28 September 1888, p. 312: "M. Gustave Boulanger, qui était le mari de Mdm. Nathalie, de la Comédie-Française, a fait don à ce théâtre du portrait de sa femme peint par lui en 1867."
"Necrologie", Courrier de l'Art, vol. 8, no. 39, 28 September 1888, p. 312.
A somewhat different timeline of events appeared in the "Necrologie" notice in Le Radical, 24 September 1888, p. 2.
