Letter | Description | Signature | Date |
---|---|---|---|
|
Ricordi
>
Bruno Bettinelli
No place |
LLET021794 | No date |
|
Ricordi
>
Ferdinando Ballo
No place |
LLET021592 | No date |
|
Ricordi
>
Arturo Benedetti Michelangeli
No place |
LLET021701 | No date |