Mormon History, Jul 6, 1845

[Anointed Quorum] Prayer circle and "council" meeting at Willard Richards's office with Brigham Young, Heber C. Kimball, Willard Richards, Levi Richards, George A. Smith, Joseph Kingsbury, William Clayton, John Taylor, Newel K. Whitney, George Miller, and Orson Pratt .

[source: Quinn, D. Michael, The Mormon Hierarchy: Origins of Power, Signature Books, 1994, Appendex: Meetings and Initiations of the Anointed Quorum, 1842-45, http://amzn.to/origins-power]