"Note to the reader [from Oliver Cowdery], There were several other blessings pronounced on the 27th of August, 1835, but for the special accommodation of some who are about to journey to Zion, their blessings will now be recorded. It may be remembered that all blessings given through any one beside president Joseph Smith, sen. that that fact will be noticed, and unless a notice of that kind is given it may be understood that it was the voice of the Spirit through him. The Lord is good, and praised be his name. Amen."
[Early Patriarchal Blessings of the Church of Jesus Christ of Latter-Day Saints, Joseph Smith Sr. (Author), H. Michael Marquardt (Editor), http://amzn.to/rCBHVe]