Letter | Description | Signature | Date |
---|---|---|---|
|
Franco Colombo
>
Heinrich Sutermeister
No place |
LLET020971 | No date |
|
Ricordi
>
Heinrich Sutermeister
No place |
LLET020974 | No date |
|
Eugenio Clausetti
>
Heinrich Sutermeister
No place |
LLET020976 | No date |
|
Alfredo Colombo
,
Luigi Bai
>
Heinrich Sutermeister
No place |
LLET028744 | No date |