Joseph Smith, Jr. receives a visit from an angel named Moroni in the upstairs room of the cabin in which he lived. During this visit Joseph receives instructions on where to find the gold plates. The following day he receives another visit after which he goes to the Hill Cumorah to locate the plates. He is not however allowed to remove the plates until September 22, 1827. (1)
-- September 21-22 1823
[Joseph Smith] Joseph is visited five times by the angel Moroni, who reveals to Joseph information about the Book of Mormon and how to restore Christs gospel. (2)
-- 1823 Sept 22
[Lucy Mack Smith] Joseph Jr. views the plates for the first time. (3)
-- 1823 November 19
Alvin Smith, Joseph Smith, Jr.'s older brother, dies from poor treatment by a doctor after feeling ill. (1)
-- 1823 Nov 19
[Lucy Mack Smith] Death of Alvin. (3)
-- 1824
[Brigham Young] Marries Miriam Works. (4)
-- 1824
[Deseret] General William H. Ashley sends trappers to northern Utah and Jim Bridger discovers the Great Salt Lake. (5)
-- 1824
[John Taylor] Leaves the Church of England and becomes a Methodist. Spends most of his free time studying the Bible, reading theological works, and praying. (6)
Footnotes:
1 - http://en.wikipedia.org/wiki/19th_century_(Mormonism)
2 - http://www.prophetjosephsmith.org/joseph_smith_timeline
3 - http://www.prophetjosephsmith.org/history_mother_appendix
4 - Teachings of Presidents of the Church: Brigham Young, The Church of Jesus Christ of Latter-day Saints, Salt Lake City, Utah
5 - http://historytogo.utah.gov/timeline/trapperstradersandexplorers.html
6 - Teachings of Presidents of the Church: John Taylor, The Church of Jesus Christ of Latter-day Saints, Salt Lake City, Utah