Letter | Description | Signature | Date |
---|---|---|---|
|
Tito II Ricordi
>
Ricordi
New York, Stati Uniti |
LLET014262 | No date |
|
Alfred Brüggemann
>
Ricordi
Aquisgrana, Germania |
LLET003125 | No date |
|
Alberto Gasco
>
Ricordi
Roma |
LLET007831 | No date |
|
Gigliola Frazzoni
>
Ricordi
Bologna |
LLET016188 | No date |