LaJean Carruth transcribes of Brigham's speech instituting the priesthood and temple restrictions.
Brigham Young, Speech, February 5, 1852, Carruth Shorthand transcription, CR 100 912, Church History Library
now I will tell you what I know that when the mark was put upon Cain (Abel['s] seed?] his children were in all probability young the Lord told Cain he should not receive the blessings of priesthood until the last posterity of Abel has received the priesthood until the redemption of earth if there never was a prophet or Apostle of Jesus Christ spoke it before I tell you this people that commonly called Negros are children of Cain I know they are I know they cannot bear rule in the priesthood first sense of the word for the curse upon them was to remain until the residue of posterity of Michael and his wife receive the blessings they should bear rule and hold keys of priesthood until times of restitution come the curse wiped off from the earth from Michael's seed fullest extent then Cain's seed had in remembrance and the time come when that should be wiped off now then in kingdom of God on earth a man who has the African blood in him cannot hold one jot nor tittle of priesthood