Presentations from the 2016, 2017, and 2019 Teaching the Codex colloquia at Merton College, Oxford. Organisers: Mary Boyle and Tristan Franklinos. Committee: Alexander Peplow and Jessica Rahardjo. Sponsors: Merton College History of the Book Group (2016, 2017, 2019); Oxford Medieval Studies, sponsored by the Oxford Research Centre in the Humanities (TORCH) (2016, 2017); the Lancelyn Green Foundation Fund (2016, 2017, 2019); the Craven Committee (2016); the Society for the Study of Medieval Languages and Literature (2017); the Oxford Bibliographical Society (2019); and the Association for Manuscripts and Archives in Research Collections (2019).