During the 1880 October Session of the General Conference of the Church of Jesus Christ of Latter-day Saints, in connection with certain revelations being added to the Doctrine and Covenants, the Pearl of Great Price was also sustained by the conference as "revelations from God," and was implicitly sustained as one of the standard or canonical works recognized by the Church as scripture. The following excerpt relating to this sustaining is extracted from page four of the October 11, 1880 issue of the Salt Lake Tribune. A full copy of this page of the paper can be seen here.
"I want to say to you, read the book, the Pearl of Great Price, and read the Book of Abraham. The Pearl of Great Price I hold to be one of the most intelligent, one of the most religious books that the world has ever had; but more than that, to me the Pearl of Great Price is true in its name. It contains an ideal of life that is higher and grander and more glorious than I think is found in the pages of any other book unless it be the Holy Bible. It behooves us to read these things, understand them: and I thank God when they are attacked, because it brings to me, after a study and thought, back to the fact that what God has given He has given, and He has nothing to retract." - Levi Edgar Young, Conference Report (April 1913), 74