Letter | Description | Signature | Date |
---|---|---|---|
|
Ricordi
>
Ildebrando Pizzetti
Milano |
LLET017431 | No date |
|
Luigi Nono
>
Ricordi
Milano |
LLET016093 | No date |
|
Ricordi
>
Alberto Franchetti
Milano |
LLET007694 | No date |