This volume serves as a comprehensive calendar and index for the Society for the Propagation of the Gospel (S.P.G.) papers housed within the Lambeth Palace Library. William Wilson Manross, a noted historian of the Anglican Church, compiled this reference to provide researchers with systematic access to the vast correspondence and administrative records of the S.P.G. The work organizes these primary source documents chronologically and thematically to facilitate scholarly investigation into colonial religious history. By cataloging these records, Manross establishes a framework for understanding the missionary activities and organizational structure of the Society during the eighteenth and nineteenth centuries.

Historians and archivists consider this volume a foundational reference tool for those studying the history of the Anglican Church and colonial missionary work. Researchers frequently note the precision of the indexing, which significantly reduces the time required to locate specific documents within the extensive Lambeth Palace collection.