Mormon History, Jun 28, 1845. Saturday.

[William Clayton Journal] ...A new revelation has come to light from Mother Smith, corrected and altered by William Smith so as to suit his wishes by representing him as the legal successor of Joseph in the presidency.

[source: George D. Smith, An Intimate Chronicle; The Journals of William Clayton, Signature Books in association with Smith Research Associates, Salt Lake City, 1995, http://amzn.to/william-clayton]