Built by Spanish Franciscan missionaries in the seventeenth century, the magnificent mission church at Acoma Pueblo in west-central New Mexico is the oldest and largest intact adobe structure in North America. But in the 1920s, in danger of becoming a ruin, the building was restored in a cooperative effort among Acoma Pueblo, which owned the structure, and other interested parties. Kate Wingert-Playdon's narrative of the restoration and the process behind it is the only detailed account of this milestone example of historic preservation, in which New Mexico's most famous architect, John...