John Buttars affidavit says he heard Martin Harris bear testimony of the BOM.
John Buttars, Affidavit, MS 1042, Church History Library
STATE OF UTAH: ss.
County of Cache:
John Buttars, being duly sworn deposes and says that I am now of the age of 77 years. I have been a resident for 63 years of Clarkston. Thomas Godfrey, William Sparks and myself went to visit Martin Harris in the winter of spring of 1875, as I remember. At that time Thomas Godfrey asked Martin Harris if he believed the Book of Mormon to be true, and he said, "No, I don't believe it to be true, I know it is true." Then He stated the conversation as Thomas Godfrey has given it in his affidavit which has just been read to me, and the statement as Thomas Godfrey has given it, is true to the best of my knowledge.
[signed] John Buttars
Subscribed and sworn to before me this 2nd day of July, 1933.
[signed] Jesse P. Rich
CITY JUDG OF LOGAN CITY, UTAH.