Prière d'insérer de "Le Bétrou"

Publisher's advertising slip printed on green paper for the first edition of "Le Bétrou" published in the Cahiers du Collège de Pataphysique in 1983.
One of the rare literary hoaxes whose true author has not yet been officially revealed. The works of Julien Torma, alleged Surrealist writer who died in 1933, were revealed by the Collège de Pataphysique. But when Henri Béhar attempted to attribute these works to some Pataphysicians such as Noël Arnaud, Eugène Ionesco, Jacques Prévert, Boris Vian or Raymond Queneau, the latter replied: "... I can assure you that I had nothing to do with the creation of the character of Torma. No more, moreover, than the other authors you mention (with the exception perhaps of just one). Torma is not the creation of simple satraps. I will say no more."
In reality it was Emmanuel Peillet, Pataphysician writer, whose identity was revealed by some very rare documents including two letters to Jacques Bonnefoy, described by Claude Oterelo:
"In these two letters written in green ink, one being signed E, Emmanuel Peillet proposes to Jacques Bonnefoy - who would help him - a strategy to mystify certain publishers by indicating codes in a meticulous and secret manner so that no one could suspect the identity of Julien Torma, mythical character created by Emmanuel Peillet. Tuesday May 20th at 2 o'clock 125 Emmanuel Peillet decides to mystify Marc Barbezat publisher of l'Arbalète for this he agrees on a code with Jacques Bonnefoy "...I me you us congratulate and we you congratulate on your happy Barbezanian initiative which must be exploited to the full. Also without even waiting for your missive and so as not to let your sacred fire cool I send you instructions from the holy trinity. First as information note an interesting quotation in an article from les Taons Modernes (by Monsieur J. Pouillon, profane but sympathetic)..." "Second it remains for Monsieur B. to play Léon Vanier. Here is the argument of your letter taking up your Saturday conversation. That is in mathematical language L. Vanier = Barbeze. Verlaine = J. T. Insofar as it is not blasphemous to lower J. T. to the Verlanian level". "We had here on Jules Laforgue by Madame Guy a little lecture which was truly exquisite. Its greatest charm in my eyes was that I was not attending it, having a date that evening with a certain Julien..." "Enclosed copy of dedications to keep preciously in your archives"... Emmanuel Peillet encloses for Jacques Bonnefoy in the February 1948 letter a page of dedications addressed to René Daumal, Peillet completely changes his handwriting to sign Julien Torma. Peillet would arrange so that one could imagine that Daumal had known Julien Torma well."
Handsome copy without creasing.