W. W. Blair recounts hearing Martin Harris reaffirm his testimony in the BOM.
W. W. Blair, Interview with Martin Harris, 1860, in Lucy Mack Smith, Biographical Sketches of Joseph Smith, the Prophet, and His Progenitors for Many Generations (Plano, IL: The Reorganized Church of Jesus Christ of Latter Day Saints, 1880), 131
(d) In 1860, when conversing with Martin Harris, at Kirtland, Ohio, in respect, to the Book of Mormon and the prophetic mission of Joseph the Martyr, he in reply to direct inquiries, told me that he obtained the one hundred and sixteen pages manuscript of the Book of Mormon from Joseph, and took them to his home, where he read them in the evenings to his family and some friends, and that he put them in his bureau in the parlor, locking both bureau and parlor, putting the keys of each in his pocket, and so retired for the night, after which he never saw them. He seemed to be still conscience-smitten for permitting them to be stolen. He reaffirmed his testimony, in substance, as found in connection with that of O. Cowdery and D. Whitmer, in respect to the divinity of the Book of Mormon. W. W. BLAIR.