Letter | Description | Signature | Date |
---|---|---|---|
|
Giulio Ricordi
>
G. B. Ponti
Milano |
CLET000529 | No date |
|
Ricordi
>
Adolfo Riva
Milano |
CLET000530 | No date |
|
Ricordi
>
Alessandro Calabi
Milano |
CLET000531 | No date |