This month marks the 150th anniversary of a terrible episode in the history of The Church of Jesus Christ of Latter-day Saints. On September 11, 1857, some 50 to 60 local militiamen in southern Utah, aided by American Indian allies, massacred about 120 emigrants who were traveling by wagon to California. The horrific crime, which spared only 17 children age six and under, occurred in a highland valley called the Mountain Meadows, roughly 35 miles southwest of Cedar City. The victims, most of them from Arkansas, were on their way to California with dreams of a bright future . . .The Mountain Meadows Massacre has continued to cause pain and controversy for 150 years. During the past two decades, descendants and other relatives of the emigrants and the perpetrators have at times worked together to memorialize the victims. These efforts have had the support of President Gordon B. Hinckley, officials of the state of Utah, and other institutions and individuals. Among the products of this cooperation have been the construction of two memorials at the massacre site and the placing of plaques commemorating the Arkansas emigrants. Descendant groups, Church leaders and members, and civic officials continue to work toward reconciliation and will participate in various memorial services this month at the Mountain Meadows.