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I also could not find any reference to Utrillo and the crucifixion, execpt in a publication in 2007 The University of Chigago released Esalen: America and the religion of no Religion, Krippal's account of the Esalen Institute. I quote from page 225 "He gave me a reproduction of a crucifixion by Utrillo, with a voluptuously writhing muscular Jesus, naked save for a wisp of a cloth across his penis" I must agree it is a long stretch to associate Utrillo with a crucifixion scene.