- The Index of Middle English Prose Handlist I: Manuscripts in the Henry E. Huntington Library (Index of Middle English Prose)
- Editing Medieval Texts
- The Penn Commentary on Piers Plowman, Volume 2: C Passus 5-9; B Passus 5-7; A Passus 5-8
- London Literature, 1300-1380
- Pursuing History: Middle English Manuscripts and Their Texts (Figurae: Reading Medieval Culture)