Here’s a Wikipedia entry:
David Persuitte, in his book, Joseph Smith and the Origins of The Book of Mormon, presents a large number of parallels between passages in View of the Hebrews and in the Book of Mormon, but notes no instances of direct copying. However, the parallels between the two books that Persuitte presents cover a broad range of topics, including religious ideas about the responsibility of the American people in convincing the Indians of their “Israelite” origins and converting them to Christianity. Moreover, Persuitte quotes from View of the Hebrews Ethan Smith’s theory about what happened to the ancient Israelites after they arrived in America. That theory is also essentially a summary of the basic story line of the Book of Mormon, including the idea that the ancient Israelite immigrants to America split into two factions: a civilized group and a savage group that subsequently exterminated the civilized group. Persuitte also quotes from the two books several similar descriptions of structures built by the civilized faction and wars that were fought between the two factions, as well as numerous other similarities. According to Persuitte, the ideas that can be found in View of the Hebrews are sufficient to have “inspired” Joseph Smith to have written the Book of Mormon had he read it.[33] Joseph Smith himself mentioned Ethan Smith and cited passages from View of the Hebrews in an article published in the Times and Seasons in June 1842.[34]
Oliver Cowdery and Joseph Smith were distantly related through their mothers (3rd cousins, 1 time removed).[35] Cowdery was educated and trained as a typesetter/printers assistant in the 1800s and worked at the Poultney Gazette in the summer of 1823 (the paper became known as the Northern Spectator in December 1823), the year that Ethan Smith published the first edition of View of the Hebrews. Cowdery’s family, including father William and stepmother Keziah, were noted as being longstanding members of Ethan Smith’s congregation in Poultney when he arrived and assumed leadership in November 1821. Even prior to his book’s publication, Ethan Smith advocated his views regarding the origins of Native Americans in sermons to his congregations. In 1825, Ethan Smith published the much-enlarged second edition of View of the Hebrews, the same year that Cowdery left Poultney for New York State.
en.wikipedia.org/wiki/Origin_of_the_Book_of_Mormon
That seems like more than just a coincidence to me.