Joseph narrates how Moroni described the origins of Native Americans.
Joseph Smith, Journal, November 9–11, 1835, 24–25, Joseph Smith Papers
all at once the room was iluminated above the brightness of the sun an angel appeared before me, his hands and feet were naked pure and white, and he stood between the floors of the room, clothed <with> in purity inexpressible, he said unto me I am a messenger sent from God, be faithful and keep his commandments in all things, he told me of a sacred record which was written on plates of gold, I saw in the vision the place where they were deposited, he said the indians, were the literal descendants of Abraham he explained many things of the prophesies to me, one I will mention which is this in Malachi 4 behold the day of the Lord cometh &c; also that the Urim and Thumim, was hid up with the record, and that God would give me power to translate it, with the assistance of this instrument he then gradually vanished out of my sight, or the vision closed,