Arts and Humanities Research Computing supports faculty and student research in the divisions of the arts and humanities and the humanistic social sciences. We not only consult on individual research projects and hold workshops on digital methodologies of particular use in those efforts, but we have also collaborated to develop research infrastructure, particularly with the Harvard Library, HarvardX, and the Academic Technology Group (ATG) of HUIT. Mirador and IIIF are excellent examples of such collaboration, and we are now focused on collecting use cases of research projects that stretch the current capabilities of Mirador/IIIF. For an excellent example, please explore Professor Jeffrey Hamburger’s commentary (via Mirador-based annotation) on a fragmentary medieval manuscript held at Harvard. The commentary elucidates both the liturgical text and the symbolism of the illuminated letters that it contains as well as explaining how the system of included texts celebrates St. John the Evangelist.