Thomas Marsh recounts asking hearing David Whitmer and Oliver Cowdery reaffirm their testimonies in the Book of Mormonr.
"History of Thos. Baldwin Marsh (Written by himself in Great Salt Lake City, November, 1857)," Deseret News 8, no. 3 (March 3, 1858): 2
After making preparations I started from Far West and moved three miles out of town, ostensibly for the purpose of settling, and soon moved off to Clay county, and from thence to Richmond, Ray county, where I saw David, John and Jacob Whitmer and Oliver Cowdery, who had all apostatized.
I enquired seriously of David if it was true that he had seen the angel, according to his testimony as one of the three witnesses of the Book of Mormon. He replied, as sure as there is a god in heaven, he saw the angel according to his testimony in that book. I asked him, if so, why he did not stand by Joseph? He answered, in the days when Joseph received the Book of Mormon, and brought if forth, he was a good man and fllled with the Holy Ghost, but he considered he had now fallen. I interrogated Oliver Cowdery in the same manner, who answered similarly.