William Sayre mentions a man who claimed in 1829 that Joseph Smith Sr. created the Book of Mormon.
William S. Sayre to James T. Cobb, 31 August 1878 in Dan Vogel, ed. Early Mormon Documents, 5 vols. (Salt Lake City: Signature Books, 2002), 4:144–146
The first I ever heard of [Joseph] Smith [Jr.], & which caused me, in part, to make the remarks about him, which I did, in a his<t[ory?]> I wrote & delivered at a 4th of July celebration here in 1876, was in the Spring (April) 1829–I was travelling in the Stage between this place & Geneva [,] Ontario Co. which is within a few miles of Palmira, & a man whose name, to the best of my recollection, was Richards,[8] got into the Stage house when on <the? rout & Said he resided at Palmira, & had been to Quages, which was in the town of Colesville a few miles from South Bainbridge village to See Jos[eph] Smith, who had resided in Palmira, &had found a gold bible & stone in which he looked & was thereby enabled to translate the very ancient chara[c]ters which <he> found in the bible. He Said Smith was poor & was living in a house which had only one room <in which he could keep [for?]> & Smith had a sheet put up in one corner & went behind it from observation when he was writing the bible. He Said Smith kept the bible hid or covered up & put it in a hat & had the Stone which <he> found in Pal=mira & look[e]d through it & then wrote what he read in the bible. He Said <he> would not let him see the bible but let him feel of it when it was covered up. Smith read to him a good deal of the bible & he repeated to those in the Stage verse after verse of what Smith had read to him; & I afterwards remem^bered Some of the names <& language> when I read the Mormon bible. An other gentleman in <the> Stage who knew Richards, Said he [Richards] was a man of Some property & had lent Smith money, & [that he[ had found [that] the books history [was] on the lost tribes of Israel. This gentleman said he did not believe that Jos[eph] was capable of composing any thing, but that Jo's father was a man of some education & cunning & shr[ewd], & he thought he was at the bottom of the matter, & had made the bible & was duping others through Joe, & that there were cheating Richards out of his money.
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I am sure it was in <April> 1829 when I saw <&> had the conversation with Richards, & I always supposed that it was before that he [Joseph Smith] was arrested & driven out of town. But perhaps it was af=ter he wrote the bible or a part of it. . . .
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I am not certain the man's name was Richards but I think so. It was the man who assisted him to means to print his bible. There might have been others. He believed in Smith.
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8. This "Richards" was likely the same man mentioned in [Martin] Harris's 1870 statement as a Mr. "Rogers," whom Harris said was opposed to Smith (III.F.15, MARTIN HARRIS TESTIMONY, 4 SEP 1870). Later in the paragraph it becomes clear that Sayre has reversed the identities of Rogers/Richards and Harris himself.