Brand reports that Whitmer reaffirmed published testimony.
“Visit of E. C. Brand to John Whitmer,” 18 February 1875; in Dan Vogel, Early Mormon Documents (Salt Lake City, UT: Signature Books, 2003), 5:250
I visited Mr John Whitmer at his residence at Far West, Caldwell Co., Mo., on the 18th of February, 1875. He also bore his testimony to me concerning the truth, and declared that his testimony, as found in the ‘Testimony of Eight Witnesses,’ in the Book of Mormon, is strictly true. He showed me a fac=simile of the characters of the plates, copied from the plates in the handwriting of Joseph Smith. Both of these men (David and John) are respectable, and looked up to as truthful, honorable men, in the vicinity where they live. The above is a brief and correct statement of my interview with them.