[Lucy Mack Smith] John C. Bennett resigns as mayor, is disfellowshipped on 25 May, and expelled as a Mason by 16 June. An order of excommunication is drawn up on 11 May but not published until 23 June. (1)
-- May 17, 1842
[Lucy Mack Smith] Joseph Smith replaces Bennett as mayor. He has been acting mayor since February. Hyrum Smith is elected vice-mayor. (1)
-- May 19, 1842
Nauvoo, Illinois. Joseph Smith was elected by the Nauvoo City Council to replace the discredited John C. Bennett as mayor. (2)
[Joseph Smith] Joseph is elected mayor of Nauvoo. (3)
[Joseph Smith] Elected mayor of Nauvoo. (4)
[Joseph Smith] Elected mayor of Nauvoo. (5)
[Lucy Mack Smith] Joseph elected mayor of Nauvoo. (6)
-- May 25, 1842 - 4 February 1843
[1st Presidency Changes] Joseph Smith, Jr. Hyrum Smith (Assistant President) Sidney Rigdon (never ordained an apostle) William Law (never ordained an apostle) John Smith (never ordained an apostle, Assistant Counselor) John C. Bennett (never ordained an apostle) disfellowshipped (7)
-- May 27, 1842
Nauvoo, Illinois. Joseph Smith stayed at home and took medicine for a bilious attack. (2)
-- May 28, 1842
An anonymous contributor to The Wasp, a pro-Mormon newspaper in Nauvoo, writes that, "Boggs is undoubtedly killed according to report; but who did the noble deed remains to be found out." (8)
-- Jun 9, 1842
Nauvoo, Illinois. Joseph Smith attended the Relief Society meeting and taught about avoiding strife and building unity. (2)
-- Jun 23, 1842
Nauvoo, Illinois. Joseph Smith wrote a letter to Jennetta Richards, wife of Willard Richards. (2)
-- Jun 29, 1842
Nauvoo, Illinois. Joseph Smith appointed William Clayton as his new scribe to replace Willard Richards, who was leaving for a season in the East. (2)
Footnotes:
1 - Anderson, Lavina Fielding, Editor, Lucy's Book: A Critical Edition of Lucy Mack Smith's Family Memoir, 2001, Signature Books
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 - Proctor, Scott Maurine Jensen, editors, History of Joseph Smith by His Mother: Revised and Enhanced
7 - Wikipedia, First Presidency (LDS Church), http://en.wikipedia.org/wiki/First_Presidency_(LDS_Church)#Chronology_of_the_First_Presidency
8 - Wikipedia, 19th Century (Mormonism), http://en.wikipedia.org/wiki/19th_century_(Mormonism)
Mormon History Timeline /Chronology
http://lds-church-history.blogspot.com/
