[Heber C. Kimball] Initiated into Holy Order or Quorum of the Anointed. (1)
Nauvoo, Illinois. Joseph Smith met with Hyrum Smith, Brigham Young, Heber C. Kimball, Willard Richards, Judge James Adams, Bishops Newel K. Whitney and George Miller, and William Law in the upper room of the Red Brick Store, where he gave them instructions on the priesthood and celestial marriage. (2)
[Joseph Smith] Joseph receives his full endowments in the Nauvoo Temple. (3)
[Joseph Smith] Introduces temple endowment. (4)
[Joseph Smith] Administers the first endowment ordinances in an upper room of his Red Brick Store. (5)
[Lucy Mack Smith] Joseph teaches the endowment ceremony for the first time to James Adams, Hyrum Smith, Newel K. Whitney, William Law, William Marks, George Miller, Brigham Young, Heber C. Kimball, and Willard Richards. (6)
[Lucy Mack Smith] Temple endowment is introduced in this dispensation. (7)
-- May 6, 1842
A gunman shoots Governor Boggs in his home, hitting him four times. The gunman is not found, but his revolver was left at the scene. Rumor and speculation points to Porter Rockwell, Joseph Smith's personal bodyguard, as the would-be assassin. Rockwell denies this, remarking that if it was him, Boggs would not have recovered. (8)
[Lucy Mack Smith] Lilburn Boggs is shot in the head but recovers; he suspects Joseph of having ordered Orrin Porter Rockwell to perform the assassination. Rockwell is arrested. (6)
-- May 7, 1842
Nauvoo, Illinois. Joseph Smith commanded drills for the Nauvoo Legion throughout the day. (2)
-- May 12, 1842
Nauvoo, Illinois. Joseph Smith attended an overflowing meeting of the Relief Society. (2)
-- May 14, 1842
Nauvoo, Illinois. Joseph Smith received word that Lilburn W. Boggs, former Missouri governor, had been shot at Independence. (2)
-- May 15, 1842
Nauvoo, Illinois. Joseph Smith published facsimile 2 and the remaining verses from the book of Abraham in the Church newspaper Times and Seasons. (2)
Footnotes:
1 - Kimball, Stanley B. (editor), On the Potter's Wheel: The Diaries of Heber C. Kimball, Chronology, Signature Books in association with Smith Research Associates, Salt Lake City, 1987
2 - BYU Studies Journal, volume 46, no. 4: A Chronology of the Life of Joseph Smith
3 - More Good Foundation, Timeline, http://www.prophetjosephsmith.org/joseph_smith_timeline
4 - Joseph Smith Papers, Timeline of Events, http://josephsmithpapers.org/TimelineOfEvents.htm
5 - Church of Jesus Christ of Latter-day Saints, Teachings of Presidents of the Church: Joseph Smith, Salt Lake City, Utah
6 - Anderson, Lavina Fielding, Editor, Lucy's Book: A Critical Edition of Lucy Mack Smith's Family Memoir, 2001, Signature Books
7 - Proctor, Scott Maurine Jensen, editors, History of Joseph Smith by His Mother: Revised and Enhanced
8 - Wikipedia, 19th Century (Mormonism), http://en.wikipedia.org/wiki/19th_century_(Mormonism)
Mormon History Timeline /Chronology
http://lds-church-history.blogspot.com/