Carl T. Cox has graciously provided me with a new account of Moroni showing the Book of Mormon plates to Mary Whitmer (1778-1856), wife of Peter Whitmer Senior. Mary was the mother of five sons who were witnesses to the golden plates: David Whitmer, one of the three witnesses; and Christian Whitmer, Jacob Whitmer, John Whitmer, and Peter Whitmer Junior, four of the eight witnesses.
Royal Jon Skousen is a professor of linguistics and English at Brigham Young University (BYU), where he is editor of the Book of Mormon Critical Text Project. He is "the leading expert on the textual history of the Book of Mormon" and the founder of the analogical modeling approach to language modeling.