2023-2024 (Spring): Bettina Wagner (Staatsbibliothek Bamberg), The Nuremberg Humanist Hartmann Schedel and his Books: A Doctor, Chronicler, and Collector at the Transition from Manuscript to Print (lecture); Incunabula from Bavaria at Harvard (workshops)

2023-2024 (Fall): Christopher Baswell (Barnard College), Arthurian Immobilities: Disabled Kings and Nobles in the Lancelot Prose Cycle (lecture); The Medieval Manuscript in Time (workshops).

2022-2023 (Spring): Eric White (Princeton University), Evidence for the Earliest Export of Printing from Mainz (lecture); Looking at Fifteenth-Century Printing Here and Now, But in Terms of There and Then (workshops).

2022-2023 (Fall): Sonja Drimmer (University of Massachusetts Amherst), Representative Bodies: Mass Production and the Parliamentary Manuscript in Late Medieval England (lecture); Technologies of Reproduction and Representation (workshops).

2021-2022 (Spring): Anne D Hedeman (University of Kansas), Power and Authority in Visual Paratext (lecture); Making the Past Present: Illustrations in Early Modern France (workshops).

2018-2019 (Spring): Simon Rettig (Freer/Sackler Galleries), Praying for the Ottoman Sultan: A New Look at Manuscripts of Selected Surahs after 1500 (lecture); An Introduction to Codicology and the Arts of the Book of the Islamic World (workshops).

2018-2019 (Fall): Sylvia Huot (Pembroke College, Cambridge University), Nuanced Readings: Iconographic Shifts in Manuscripts of Christine de Pizan's "Epistre Othea" (lecture); The Roman de la Rose: From Medieval Manuscripts to Modern Editions (workshops).

2017-2018 (Spring): Peter Kidd (independent researcher), Greater than the Sum of Their Parts: Incomplete Medieval Manuscripts in Boston and Elsewhere (lecture); Researching the Provenance of Early Manuscripts and Books: A Practical Introduction (workshops).

2016-2017 (Spring): Julian Weiss (King's College London), In the Tracks of Josephus: Reading Jewish History and Belief in the Early Modern Hispanic and Lusophone Worlds, 1492-1687 (lecture); Creating Vernacular 'Literature' in Renaissance Spain and Portugal (workshops).

2015-2016 (Fall): William Caferro (Vanderbilt University), The HBS Medici Collection: Florence and International Trade, 1400-1600 (lecture); The HBS Medici Collection: Reading Account Books as Texts and Historical Sources and The HBS Medici Collection: Florentine Business and Accounting Practices (workshops). Co-sponsored by the Baker Business Library and the Department of History.

2014-2015 (Spring): Monica Green (Arizona State University), Reconstructing Medieval Medical Libraries: Between the Codex and the Computer (lecture and workshop). Co-sponsored by the Francis Countway Medical Library.

2014-2015 (Fall): Peter Rückert (Hauptstaatsarchiv Stuttgart), Paper History and Watermarks Research: New Perceptions in Digital Dimensions (lecture); Material Aspects of Medieval German Manuscripts and Incunabula for Description and Dating (workshop).

2013-2014 (Spring): Anthony Grafton (Princeton University), Renaissance Humanists and the Study of Manuscripts (lecture); Life in the Margins: Practices of Learned Annotation in Early Modern Europe (workshop).

2013-2014 (Fall): Cristina Dondi (Consortium of European Research Libraries), Thinking Again about the First Printing Revolution with Both Eyes on the Books: Venetian Evidence for Prices, Trade, and Use (lecture and workshop).

2012-2013 (Spring): Nicholas Pickwoad (University of the Arts, London), Unfinished Business: Incomplete Bindings Made for the Booktrade from the Fifteenth to the Nineteenth Century (lecture and workshop).

2012-2013 (Fall): George Ferzoco and Carolyn Muessig (University of Bristol), Medieval Sermons and Preaching in the Manuscripts of Houghton Library (workshop).

2011-2012: Kenneth Pennington (Catholic University of America), Reading the Ius Commune: The Secrets of Roman and Canon Law Manuscripts (lecture and workshop). Co-sponsored by the Harvard Law Library.

2011-2012: Paul Needham (Princeton University), The Gutenberg Bible from Past to Present (lecture); The Many Layers of the Fifteenth-Century Printed Book (workshop).

2010-2011: Roger Wieck (Pierpont Morgan Library), The Sacred Bleeding Host of Dijon (lecture); The Book of Hours (workshop).

2010-2011: Julia Boffey (University of London-Queen Mary), Defining the Urban Reader: Books and Reading Practices in London in the Late Fifteenth and Early Sixteenth Centuries (lecture); Middle English Books in the Houghton Library (workshop).

2009-2010: Brigitte Bedos-Rezak (New York University), Corporeal Boundaries in Medieval Texts: The Charter Evidence (lecture); From Archive to Collection: Medieval Charters and the Contingency of Interpretation (workshop).

2008-2009: Richard and Mary Rouse (UCLA), A Princely Gift: The French Translation of Vegetius, 1284-1300 (lecture); Florilegia and Glosses: Books for Reference Rather than Reading (workshop).

2007-2008: Falk Eisermann (Gesamtkatalog der Wiegendrucke, Berlin Staatsbibliothek), Secrets of Success: Printers and their Patrons in Fifteenth-Century Leipzig (lecture and workshop).

2006-2007: Nigel Palmer (St. Edmund Hall, Oxford), Blockbooks and Their Place in the Transition from Manuscript to Print in the Fifteenth Century (lecture and workshop).

2005-2006: Felix Heinzer (University of Freiburg), Hildegard of Bingen and Elisabeth of Schonau: Visionary Attitude and Monastic Culture in Twelfth-Century Germany (lecture); Liturgical Manuscripts in Houghton Library (workshop).