Arthur B. Deming speculates that Solomon Spaulding wrote multiple copies of "Manuscript Found."
Arthur B. Deming, "Several Copies of 'Manuscript Found,'" Naked Truths about Mormonism, Jan. 1888
When in Washington, D. C., Mr. Redic McKee, now deceased father of David R. McKee Washington, agent for the N. Y. Associated Press, informed me that he kept store in Amity, Pa., for a Pittsburg firm, and that he boarded with Solomon Spaulding and heard him tell about his "Manuscript Found," and that he did not read a copy that was in the house because there was a corrected copy at Patterson's Printing Office in Pittsburgh, Pa., and he intended to purchase a copy when published. Rigdon obtained possession, I know not how, of the corrected copy Patterson had, and the copy of a previous draft Hurlbut secured. It is not improbable that Spaulding rewrote the "Manuscript Found" several times; it was such an original and strange work. I have no evidence that Hurlbut said he had a copy of "Manuscript Found" for which he had been offered $1,000, but did not sell, and that his son said it was in their house and he could see it any time.