The Franciscan mission San José de Tumacácori and the perennially undermanned presidio Tubac become John L. Kessell's windows on the Arizona–Sonora frontier in this colorful documentary history. His fascinating view extends from the Jesuit expulsion to the coming of the U.S. Army.

Kessell provides exciting accounts of the explorations of Francisco Garcés, de Anza's expeditions, and the Yuma massacre. Drawing from widely scattered archival materials, he vividly describes the epic struggle between Bishop Reyes and Father President Barbastro, the missionary scandals of 1815–18, and the bloody victory of Mexican civilian volunteers over Apaches in Arivaipa Canyon in 1832. Numerous missionaries, presidials, and bureaucrats—nameless in histories until now—emerge as living, swearing, praying, individuals.

This authoritative chronicle offers an engrossing picture of the continually threatened mission frontier. Reformers championing civil rights for mission Indians time and again challenged the friars' "tight-fisted paternalistic control" over their wards. Expansionists repeatedly saw their plans dashed by Indian raids, uncooperative military officials, or lack of financial support.

Friars, Soldiers, and Reformers brings into sharp focus the long, blurry period between Jesuit Sonora and Territorial Arizona.

The Mission of Guevavi on the Santa Cruz River in what is now southern Arizona served as a focal point of Jesuit missionary endeavor among the Pima Indians on New Spain's far northwestern frontier.

For three-quarters of a century, from the first visit by the renowned Eusebio Francisco Kino in 1691 until the Jesuit Expulsion in 1767, the difficult process of replacing one culture with another—the heart of the Spanish mission system—went on at Guevavi. Yet all but the initial years presided over by Father Kino have been forgotten.

Drawing upon archival materials in Mexico, Spain, and the United States—including accounts by the missionaries themselves and the surviving pages of the Guevavi record books—Kessell brings to life those forgotten years and forgotten men who struggled to transform a native ranchería into an ordered mission community.

Of the eleven Black Robes who resided at Guevavi between 1701 and 1767, only a few are well known to history. Others—such as Joseph Garrucho, who presided more years at Guevavi than any other Padre; Alexandro Rapicani, son of a favorite of Sweden's Queen Christina; Custodio Zimeno, Guevavi's last Jesuit—have the details of their roles filled in here for the first time.

In this in-depth study of a single missionary center, Kessell describes in detail the daily round of the Padres in their activities as missionaries, educators, governors, and intercessors among the often-indifferent and occassionally hostile Pimas. He discusses the Pima uprising of 1751 and the events that led up to it, concluding that it actually continued sporadically for some ten years.

The growing ferocity of the Apache, the disastrous results of certain government policies—especially the removal of the Sobaípuri Indians from the San Pedro Valley—and the declining native population due to a combination of enforced culture change and epidemics of European diseases are also carefully explored.

The story of Guevavi is one of continuing adversity and triumph. It is the story, finally, of explusion for the Jesuits and, a few short years later, the end of Mission Guevavi at the hands of the Apaches.

In Mission of Sorrows Kessell has projected meticulous research into a highly readable narrative to produce an important contribution to the history of the Spanish Borderlands.