Letter | Description | Signature | Date |
---|---|---|---|
|
Hertha Einstein
>
Ricordi
El Cerrito, Stati Uniti Source: Archivio Storico Ricordi |
LLET023636 > | 6/12/1955 |
|
Ricordi
>
Hertha Einstein
No place Source: Archivio Storico Ricordi |
LLET023637 > | 14/12/1955 |