Letter | Description | Signature | Date |
---|---|---|---|
|
Tito II Ricordi
>
Luigi Illica
Milano |
CLET001755 | No date |
|
Leopoldo Mugnone
>
Carlo Clausetti
Firenze |
LLET012022 | No date |
|
Alfred Brüggemann
>
Ricordi
Coblenza, Germania |
LLET003199 | No date |