[Heber J. Grant]
At 9 o'clock met George Albert Smith at his home. ... I had a chat with him and he heartily approved of Joseph F. Smith, Hyrum M. Smith's son as Patriarch to the Church. That makes the unanimous vote of all of the Apostles for this young man, for which I am grateful.
It is about ten years since [former Presiding Patriarch] Hyrum G. Smith died and during that period I have never had the impression to call Eldred G. Smith, the oldest son of Hyrum G. Smith, to the position. I have prayed earnestly for any impression the Lord had to give me as to whom to choose. I finally felt impressed to call Joseph F. Smith, and now the First Presidency and all the members of the Quorum are a unit on the matter. I shall submit his name for the position at our coming Conference. ...
... also talked with Joseph F. Smith [III] and told him he had been selected to be the Patriarch to the Church. He apparently was very greatly surprised, had to wipe his eyes a time or two in talking to me, but of course he felt to accept the office, and I feel sure that he will give perfect satisfaction to the people and will be blessed of the Lord in his labors.
[The Diaries of Heber J. Grant, 1880-1945, Abridged, Digital Edition Salt Lake City, Utah, 2015]