Archives are the current holding institutions of sources.
| Biblioteca Narodowa (PL-Wn) |
| Biblioteka Uniwersytecka, Oddzial Zbiorów Muzycznych (PL-Wu) |
Organizations are corporate entities that have been involved in the history of a source, typically as an owner, creator, or seller.
| Biblioteka Zaluskich, Warsaw |
| Swidzinski library |
Sources that have had their origins in this city.
No Sources