250, 253 pp. Both books are bound in green leatherette and lettered in gilt on the spines; headbands; Volume One includes a dropped-in printed card explaining the Chief Abbreviations. Light wear on the corners; no interior markings; no dustjackets, as issued. The Chapters are: VOLUME ONE: A Survey of the Vatican Archives and of Its Medieval Holdings: Papal Archives - the Vatican Archives - Archival Research; Guides Inventories Calendars; Original Archivio Segreto Vaticano; Cameral Holdings of Archivio; Armaria of Original Archives; Fondo dell'Archivio di Stato in ASV; Cameral Holdings of Archivio di Stato di Roma; Avignon Archives; Archives of the Dataria Apostolica; Diplomatic Holdings; The Secretariates: The Apostilic Secretariate; The Secretariate of Briefs; The Secretariate of Epistolae ad Principes; The Secretariate of Contradicted Letters; The Secretariate of Memoriali; The Secretariate of Litterae Latinae; The Secretariate of State: Holdings of Original Archivio; Miscellaneorum Armarium; General Correspondence; Archives of Cardinal-nephews etc; Nunciatures and Legations; Modern Holdings; Archives of the Consistory; Archives of Congregations: Archives of Extant Congregations: Inquisition; Trent; Consistorial; Rites and Ceremonies; Propaganda File; Others; Archives of Extinct Congregations; Archives of Tribunals; Lesser Holdings of the ASV; Notes on Selected Medieval Holdings: The Vatican Registers; The Avignon Registers; The Lateran Registers; Registers of Supplications; and Cameral Registers; followed by a general bibliography and an index. VOLUME TWO: A Check-list of Middle English Prose Writings of Spiritual Guidance: Short Titles of Periodicals; Preparing the Check-list; The Check-list; Alphabetical List of Incipits; List of Manuscripts; Alphabetical List of Titles and Authors Mentioned in the Check-list; and Acephalous Items Contained in the Check-list; followed by a selected bibliography. Size: 8vo