Fred Collier ... asked Davis [Bitton], "What have you heard on the revelation of June 9?" Davis asked him what he had heard. He told Davis what he had heard from Boyd Packer's testimony in a testimony meeting and about Bro. [Bruce R.] McConkie's speech to his family, and he said that Elder Packer in bearing his testimony said that Jesus himself had appeared at the June 1 meeting of the Quorum of the Twelve and the First Presidency. In speaking of it he [Packer] was all choked up and said now he could testify that Jesus was a person of body, parts, and passions-a person of flesh and blood, and that Jesus himself had been seen by the First Presidency and Quorum of the Twelve in that meeting, and indicated his desire to have them accept the blacks into the priesthood.
[Source: Confessions of a Mormon historian : the diaries of Leonard J. Arrington, 1971-1997, Gary James Bergera, editor, Signature Books, 2018]