Archive website: Real Monasterio de Santa María, Archivo de Música
| Source name | Date | Type | Surface | |
|---|---|---|---|---|
| E-GU Códice 1 (Libro de Introitos) | 16th century | manuscript of polyphony | Paper | |
| E-GU Códice 2 | 1603-c. 1675 | manuscript of polyphony | Paper | |
| E-GU Códice 3 | 1603-c. 1675 | manuscript of polyphony; originally the second part of GuadM (1) (CrawTC) | Paper | |
| E-GU Códice 4 (Magnificats of Morales) | early 17th century | manuscript of polyphony | Mixed Paper and Parchment |