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This sleight was first published in Harry Lorayne's Close-up Card Magic, 1962, p. 269. Lorayne called it the “JB Kard Kop.” But in Advanced Fingertip Control, 1970, p. 142, Ed Marlo recounts that he was told by Persi Diaconis that Persi showed this steal-palm to John Benzais, and Benzais then showed it to Lorayne. However, Wesley James writes that Benzais told James that he showed it to Diaconis instead, see Enchantments, 2004, p. 278.