The Brother I. Leo O'Donnell Archives include documents and records tracing the history of CBC/CBU from its earliest days to the present. Among the material are ledgers, catalogs, scrapbooks, photographs, graduation programs, and more.
In addition, the O'Donnell Archives houses three special collections:
- CBU Faculty-Staff Publications and Artistic Achievements
- The Edward F. Barry Collection
- The Reverend John Joseph Higgins Collection