Brad at BCC makes an interesting observation about those in attendance at the revelation giving black men the priesthood. Two apostles in particular had feelings against blacks; Elder Stapley (see here for example) and Elder Peterson (see here for example). Benson also had such feelings, but Brad suggests this may have been due more to his anti-communist feelings than feelings against blacks. These two apostles were the only two absent from from the meeting (due to sickness and an assignment to South America).
One wonders if this was by design.
Interestingly, something related happened the previous decade when 1st Presidency member Hugh B. Brown arranged a vote among the Quorum of the Twelve while Harold B. Lee (who also had such feelings) was out of town. The Quorum of the Twelve approved the measure to give blacks the priesthood. However, when Elder Lee returned to town, he was able to get the vote reversed.