| Letter | Description | Signature | Date |
|---|---|---|---|
|
Filippo Filippi
>
Eugenio Tornaghi
No place Source: Archivio Storico Ricordi |
LLET007183 > | No date |
|
Achille De Lauzières
>
Eugenio Tornaghi
No place Source: Archivio Storico Ricordi |
LLET009543 > | No date |
|
Achille De Lauzières
>
Ricordi
No place Source: Archivio Storico Ricordi |
LLET009554 > | No date |