Joseph Smith, The Foe Of Polygamy [from Zion's Ensign vol. 32], 1921 (PDF) by Walter W. Smith see also Zion's Ensign Sermon on polygamy given on November 7, 1920 at the RLDS Stone Church, Independence, Missouri, USA. Walter Smith states, "I have spoken to a great many people and I have talked with those who were living at Nauvoo, not in great numbers, because they were thinning out by the time I came along; but I have talked to quite a considerable number, all of whom testify personally to knowing that Joseph Smith was not responsible for this doctrine. Think of the ridiculous situation with which we are confronted. We meet people who testify that they were Joseph Smith's wives, but when we inquire deeply into the matter we find that the marriage ceremony takes place in Salt Lake City and that Brigham Young or some other person stood proxy for Joseph Smith. There is no way in the world to save a man's reputation from such calumny. It is really quite, ridiculous." 6 pages in length.
Was Joseph Smith A Polygamist, 1899 (PDF) by Heman C. Smith Pamphlet which discusses the claims of two women, Zina D. Huntington Young and Emily D. Partridge Young who assert they were plural wives of Joseph Smith, Jr. Both claims are refuted in this pamphlet. It goes on to give evidence of the falsehood of the revelation on polygamy and further states, "That there is not nor has been any progeny of Joseph Smith except by his legal wife, Emma Hale, whom he married January 18, 1827."