80 years ago today - Dec 11, 1931 - 6 April 1933

[1st Presidency Changes] Heber J. Grant Anthony W. Ivins Death of Charles W. Nibley (never ordained an apostle)

[Source: Wikipedia, First Presidency (LDS Church), http://en.wikipedia.org/wiki/First_Presidency_(LDS_Church)#Chronology_of_the_First_Presidency]