David W. Patten connects Moroni with the Book of Mormon.
David W. Patten, "To the Saints scattered abroad" in Elders' Journal 1, no. 3 (July 1838): 42, The Joseph Smith Papers website, accessed August 11, 2021
And they who sin against this authority given to him—(the before mentioned man of God,)—sins not against him only, but against Moroni, who holds the keys of the stick of Ephraim.