BETTENCOURT (Pierre). Bone fragments for a skeleton. [Saint-Maurice-d'Ételan] : Institut national de recherche irrationnelle, [1949]. - In-16, paperback, filled cover. Rare first edition, printed at only 40 numbered copies on Arches vellum. It is illustrated with three compositions by the author, one in color on the cover, repeated on the title, one full page and one off-text on japon. A perfectly preserved copy, uncut. Spotting on the leaf after the hors-texte.