Zina D. Young reported in Deseret News as saying how Joseph told her he was commanded by an angel to practice plural marriage.
"The Prophet's Birthday," Deseret News 39, no. 50 (January 12, 1881): 2
Sister Zina D. Young told of Bro. Joseph's remark in relation to the revelation on celestial marriage. How an angel came to him with a drawn sword, and said if he did not obey this law he would lose his priesthood; and in the keeping of it, he, Joseph, did not know but it would cost him his life[.] Bore a faithful testimony to the great nobility of Joseph Smith and the greatness of the work he commenced in this dispensation.