| Source name | Date | Type | Surface | |
|---|---|---|---|---|
| E-TO Cód. 97 | 14th century | flyleaves, three non-music manuscripts bound together | Parchment | |
| E-TO Cód. 133 | 13th century | chant book with added polyphony | Parchment | |
| E-TO Cód. 135 | 13th century | chant book with added polyphony | Parchment |