Heber C. Kimball describes being endowed in Nauvoo.
Heber C. Kimball, "Strange Events," Journal, 1840 December - 1841 March, 1843 June - October, 1845 May - November, MS 627, Heber C. Kimball Papers, Church History Library
Strange Events, June 1842. I was aniciated [initiated] into the ancient order was washed and annointed and Sealled and ordained a Preast, and so forth in company with nine others, Viz. Josph Smith, Hiram Smith, Wm. Law, Wm. Marks, Judge [James] Adams, Brigham Young, Willard Richrds, George Miller, N. K. Whitney.