Archives are the current holding institutions of sources.
| Archivo Histórico Nacional (E-Mn) |
| Biblioteca Nacional (E-Mn) |
| Museo Lázaro Galdiano (E-Mlg) |
| Palacio Real, Biblioteca (E-Mp) |
| Private Library of Don Bartolomé March Servera (E-Mb) |
Organizations are corporate entities that have been involved in the history of a source, typically as an owner, creator, or seller.
| Real Convento de las Senoras de la Encarnaçion |
| court of Philip II, King of Spain (1527-98) |
Sources that have had their origins in this city.
| E-Mn Sección de Música. MS M. 2431 |
| E-MO MS 752 (uncertain) |
| E-MO MS 753 (uncertain) |
| E-MO MS 767 |
| E-MO MS 772 |