Letter | Description | Signature | Date |
---|---|---|---|
|
Tito II Ricordi
>
Ricordi
New York, Stati Uniti |
LLET014262 | No date |
|
Alberto Gasco
>
Ricordi
Roma |
LLET007831 | No date |
|
Luciana Pestalozza Abbado
>
Eugenio Clausetti
Milano |
LLET031059 | No date |