Dont have a source for this but I copied it from somewhere
DAMAGE CONTROL
In 1997, the First Presidency of the Mormon Church and the Quorum of the Twelve Apostles decided to publish a manual entitled: Teachings of Presidents of the Church: Brigham Young. This manual has generated a good deal of controversy. As noted above, Vern Anderson wrote an interesting article that demonstrated the churchs attempt to suppress information regarding Brigham Youngs plural wives.
Anderson reported that a young woman who had recently married a Mormon came to the home of Valeen Tippetts Avery, a noted Mormon writer, seeking to know why the new manual overlooked Brigham Youngs practice of polygamy. Vern Anderson wrote: She was confused now, and someone had suggested she talk to Avery.
Dr. Avery, she said, I just got the new Relief Society manual, which is about Brigham Young, and he only has one wife.
Avery, a Mormon who knew the pioneer leader had 55 wives, couldnt explain why the lesson manual being used since January by male and female church members in 22 languages paints Americas most famous polygamist as a monogamist.
But she had some advice.
The Mormon church is trying to say to the new people coming into the church, as well as to the larger American society, that there was nothing questionable in the Mormon past, Avery told the woman. And if you want answers to these kinds of sticky questions, youre not going to find them inside accepted Mormon manuals and doctrines.
The absence of any mention of polygamy is just one of the criticisms being leveled at the manual
Whoever compiled the manual is extraordinarily embarrassed by the churchs second president, says Ron Priddis of Signature Books.
Its a religious tract, not history, scoffs historian Nancy J. Taniguchi .
Within months of assuming the church presidency in March 1995, Gordon B. Hinckley told the Quorum of the Twelve Apostles to begin updating the curriculum of the adult male priesthood quorums and the Relief Society, both of which had always been separate... Soon, a writing committee was formed, using Discourses of Brigham Young, a 1954 compilation of Youngs teachings by Apostle John A. Widtsoe, as the primary source for a new priesthood manual
Widtsoes work, narrowly windowed from the hundreds of Young speeches contained in the multivolume Journal of Discourses, had served to spruce up and sanitize the rough-and-ready frontier prophet for modern audiences. Widtsoe eliminated many of the cantankerous, contradictory, hyperbolic rantings for which Young was known
Polygamy, which church founder Joseph Smith secretly practiced and which Young publicly championed, was dropped 13 years after his death and appears nowhere in the Widtsoe index or the new manual.
Also missing from the manual are Youngs theories that Adam was God the Father and that Eve was just one of Gods wives, the rest having been left on other worlds. Blood atonement was another casualty.
Worse than a glaring lack of context, though, say critics who have closely compared statements in the manual of Youngs sermons, are the resulting misrepresentations of his ideas.
Id say that about 10 percent of the quotes are overtly lifted out of context, with about another 10 percent that are more subtly altered. In addition, about 5 percent have been abbreviated to avoid offense regarding race, nationality, gender and so on, Priddis said.