In previous versions of the RISM catalog, the Stiftsbibliotek was assigned the siglum "CH-E". However, the CH-E siglum now refers to the Musikbibliotek.
| Source name | Date | Type | Surface | |
|---|---|---|---|---|
| CH-Estb 121 | 10th century, c.960-970 | chant book with added polyphony | Parchment |