Ezra Booth identifies Native Americans as Lamanites.
Ezra Booth, “Mormonism—Nos. VIII-IX” Ohio Star [Ravenna], 8, Dec. 1831, The Joseph Smith Papers website, accessed August 11, 2021
The Book of Mormon which I hold in my hands, is a Divine Revelation, and the very thing we need, to burst the cloud and remove the darkness, which has long surrounded the mysterious and degraded aborigines. We now know that the Natives who inhabit the forests of America, are a "branch of the House of Israel;" and by the means of this blessed book, they are soon, even in this generation, to be restored to the knowledge, and the true worship of the God of Israel. — Among them is to be built the "glorious City of the New-Jerusalem," in the midst of which is to sand, the splendid and magnificent Temple, dedicated to the Most High God, and "Oliver being called and commanded of the Lord God, to go forth among the Lamanites, to proclaim glad tidings sof great joy unto them, by presenting unto them, the fulness of the Gospel of the only begotten son of God," &c. The grand enterprise of introducing this new dispensation, or the fulness of the Gospel, among the Indian tribes, who have recently received the appellation of Lamanites, was committed in charge to Oliver Cowdery,