This review article draws upon all of the social science literature about the Monnons published in the United States during the 20th century, though it is based primarily on the 250-plus references furnished at the end. These refer ences are limited to the English language citations in the major bibliographic reference works such as the International Index to the Social Sciences, the Social Science Citation Index, Sociological Abstracts, and the indexes to the major scholarly journals of religion not cited in these general reference works. During the first half of the twentieth century, scholarly literature on the Monnons dealt primarily with historical and contemporary studies of social geography, rural sociology, agricultural economics, the family, and fertility among the Monnons. Although these topics continue to be studied, since mid-century new foci of interest have appeared in the literature, including the impact of modernization and secularization upon the Monnon subculture and religion ; shifting public images of Monnonism ; Monnon involvement in poli tics ; Monnon relationships with ethnic groups, especially with blacks; sex roles and the position of women within the Monnon subculture; and the growth of Monnonism outside North America. A somewhat less prominent, but also important, emphasis in the more recent literature is Monnon religiosity and its consequences. Among the potentially interesting topics scarcely addressed in any of the literature on Monnons are social stratification and the distribution of 'The term Mormon Church is actually a nickname for the Church of Jesus Christ of Latter-day