Letter | Description | Signature | Date |
---|---|---|---|
|
Luigi Nono
>
Mimma Guastoni
No place Source: Archivio Storico Ricordi |
LLET016023 > | 28/8/1981 |
|
Mimma Guastoni
Milano Source: Archivio Storico Ricordi |
LLET030562 > | 20/7/1984 |