In his autobiography Newel Knight describes the Hiram Page seer stone incident.
Newel Knight autobiography, circa 1871, Autobiography pages 1-399, 145-147, Church History Library, MS 19156
After arranging my affairs at home, I again set out for Fayette, to attend our second Conference, which had been appointed to be held at Father Whitmer’s where Joseph now resided. On my arrival I found Bro. Joseph in great trouble of mind on account of Hyrum Page, who had managed to get up some divisions of feeling among the brethren by giving revelations concerning the government of the Church and other matters, which he had received through the medium of a stone he had in his possession.
He had quite a roll of papers full of these revelations, and many in the Church were led astray by them.
Even Oliver Cowdery and the Whitmer family had given heed to them, although they were in contradiction to the New Testament, and the revelations of these last days.
Here was a chance for Satan to work amongst the little flock, and he sought by this means to accomplish what persecution failed to do. Joseph was perplexed, and scarcely knew how to meet this new exigency.
That night I occupied the same room that he did, and the greater part of the night was spent in prayer and supplication, and after much labor with these brethren they were convinced of their error, and confessed the same.