Sophronius was one of the most influential figures spanning the ecclesiastical troubles in East and West during the sixth to the seventh centuries. Poet, hagiographer, dogmatician, homilist, and liturgist, he was a widely-travelled monastic who had close ties with the see of Rome and an unrivalled knowledge of the workings of the anti-Chalcedonian churches, revealed in his Synodical Letter. Sophronius despatched this epistle to other church leaders when at an advanced age he became patriarch of Jerusalem in AD 634. The letter was read out at the Sixth Ecumenical Council in 680-1, and provided the only sustained rebuttal of the monoenergist doctrine which was used by eastern emperors and church leaders alike as a political strategy to unite Christians in the early Byzantine empire.
Pauline Allen provides the first complete annotated translation of the Synodical Letter into a modern language. A comprehensive introduction situates the work in the context of the aftermath of the Council of Chalcedon (AD 451). It is accompanied by a dossier of translated documents by other writers of the time which illustrate the progress of the debate and its political and ecclesiastical repercussions in the first half of the seventh century.

Cowboy Christians examines the long history of cowboy Christians in the American West, focusing on the cowboy church movement of the present day and closely related ministries in racetrack and rodeo settings. Early chapters move from the postbellum period through the twentieth century, tracing religious life among cowboys on the range as well as its representation in popular imagery and the media. The central chapters focus on the modern cowboy church and examine its structure, theology, and method of perpetuation, and explore future challenges the institution may face, such as its relegation of women to subordinate participant roles. The final chapter considers present day incarnations of rodeo and racetrack ministries as examples of the cowboy Christian proclivity for blending the secular and the sacred in leisure environments. Woven throughout the text is a discussion of the religious significance of the cowboy church movement, particularly relative to twenty-first century evangelical Protestantism. Marie W. Dallam demonstrates that the cowboy church's antecedents and influences include muscular Christianity, the Jesus movement, and new paradigm church methodology. With interdisciplinary research that blends history and sociology, Cowboy Christians draws on interviews with leaders from cowboy churches, traveling rodeo ministries, and chaplains who serve horse racing and bull riding environments, as well as incorporating Dallam's own experiences as a participant observer.