[1st Presidency Changes] Brigham Young George A. Smith Daniel H. Wells Joseph F. Smith (Counselor) George A. Smith called as First Counselor (1)
-- Oct 7, 1868
[Quorum of the Twelve] George A. Smith set apart First Counselor to President Brigham Young. (2)
-- Oct 9, 1868
Brigham Young, Jr. sustained as a member of the Quorum of the Twelve. (He was previously ordained an apostle.) (2)
-- Oct 16, 1868
Co-operative Mercantile Institution was organized. B. Young, president. (3)
-- During 1868 October
Brigham Young, Jr., already an ordained apostle, is adopted into the Quorum of the Twelve Apostles. (4)
-- Dec 24, 1868
In the evening street lamps were first used in Salt Lake City. (3)
-- 1868
Church Membership at end of year: 84,622
New Converts : 3,498
Percent Change from previous year: 4.31% (5)
[Deseret] The name Great Salt Lake City was changed to Salt Lake City. (6)
[Deseret] Zions Mercantile Cooperative Institution formed as first United States department store. (7)
-- During 1868-70
[John Taylor] Serves as Probate Judge of Utah County. (8)
-- Mar 1, 1869
Zion's Cooperative Mercantile Institution (ZCMI), a cooperative business system, began in Salt Lake City. (9)
ZCMI opened for business. (10)
-- May 10, 1869
Great Pacific Railroad completed by junction of Union Pacific and Central Pacific Railroads, Promontory Summit, UT. (9)
Footnotes:
1 - Wikipedia, First Presidency (LDS Church), http://en.wikipedia.org/wiki/First_Presidency_(LDS_Church)#Chronology_of_the_First_Presidency
2 - Wikipedia, Chronology of the Quorum of the Twelve Apostles (LDS Church), http://en.wikipedia.org/wiki/Chronology_of_the_Quorum_of_the_Twelve_Apostles_(LDS_Church)
3 - Richards, Franklin Dewey and Little, James A., Compendium of the Doctrines of the Gospel, Church Chronology, Ch.66, p.306
4 - Wikipedia, 19th Century (Mormonism), http://en.wikipedia.org/wiki/19th_century_(Mormonism)
5 - Wikipedia, The Church of Jesus Christ of Latter-day Saints Membership History, http://en.wikipedia.org/wiki/The_Church_of_Jesus_Christ_of_Latter-day_Saints_membership_history
6 - History to Go, Pioneers and Cowboys, http://historytogo.utah.gov/timeline/pioneersandcowboys.html
7 - History to Go, Statehood, http://historytogo.utah.gov/timeline/statehood.html
8 - Church of Jesus Christ of Latter-day Saints, Teachings of Presidents of the Church: John Taylor, Salt Lake City, Utah
9 - Ludlow, Daniel H. editor, Encyclopedia of Mormonism, Macmillan Publishing, Encyclopedia of Mormonism, Vol. 4, Appendix 2: A Chronology of Church History
10 - Hemidakaota, "Church Chronology from 1800-2000," http://www.lds.net/forums/scripture-study-forum/12108-church-chronology-1800-2000-part-1-a.html#post214550
Mormon History Timeline /Chronology
http://lds-church-history.blogspot.com/
