50 years ago today - Oct 6, 1961 - 12 October 1961

[1st Presidency Changes] David O. McKay Henry D. Moyle Hugh B. Brown (Third Counselor) Death of J. Reuben Clark, Jr.

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