The Latter-day Saints keep records to an unusual degree, and the way that archive has been handled over the past few decades is itself part of the region's religious history.
Genealogy is a religious duty in this tradition, because ordinances are performed vicariously for the dead, and the church has therefore built the largest genealogical collection in the world, microfilming and later digitising civil and parish registers from dozens of countries and making them freely searchable. The practice of baptising the dead by proxy has caused repeated objection from Jewish organisations over the inclusion of Holocaust victims, and agreements limiting it have been made and reasserted.
The institution's own history has been a harder problem. Sensitive episodes, among them the origins and abandonment of plural marriage, the restriction of priesthood ordination from men of black African descent until 1978, and the Mountain Meadows massacre of 1857, were for a long time discussed more openly by outside historians than by the church. That changed with the Gospel Topics essays published from 2013, which address those subjects directly and are issued with the church's institutional authority, and with the Joseph Smith Papers project and the Saints narrative history.
The Hofmann forgeries of the 1980s, in which a dealer sold fabricated early documents to the church and to collectors before turning to murder, are also acknowledged in the church's own published account.