Mormonism's legitimacy is based on the claim that the church was instituted by divine mandate and by the authorization by God of Latter-day Saint ecclesiastical leaders, whose role as the only acceptable source of doctrine is stressed by church leaders and membvrs alike. Mormons hold their religious beliefs to be based on continuing, literal revelation through the church President who is designated Prophet, Seer and Revelator. Doctrine is seen as flowing from the top of the church hierarchy to the grass-roots level. This study of the doctrinal beliefs of a sample of a Utah Latterday Saints documents show, in spite of the authority-based concept of revealed doctrine, actual beliefs at the local level may deviate from doctrinal positions issued by church Presidents. In specific areas outside core doctrines of the church, the plurality or even majority of local members may espouse beliefs at odds with doctrines articulated by the Prophet of the church with no apparent awareness by members of their deviance from the official doctrine. The pattern of variation between Mormon official positions and folk-beliefs is outlined, and the processes that maintain this variation are discussed.