| Letter | Description | Signature | Date |
|---|---|---|---|
|
Carlo Pedrotti
>
Ricordi
Torino Source: Archivio Storico Ricordi |
LLET012979 > | 23/1/1876 |
|
Carlo Pedrotti
>
Giulio Ricordi
Verona Source: Archivio Storico Ricordi |
LLET012982 > | 28/8/1876 |