Since its release in 2009, The California Missions Source Book has become the definitivereference on the California missions. This third edition includes the twenty-one missions and San Antonio de Pala, the only mission-era asistencia (submission) that remains intact and continues to serve the descendants of its original Indian community. The Source Book is an indispensable guide to the missions, richly illustrated with images, charts, and maps. The hard cover, spiral-bound format makes it extra sturdy for use by scholars in the field, as well as for mission docents and visitors. A valuable resource with a beautiful presentation, The California Mission Source Book is a fine addition to the library of anyone interested in the California Missions.