Letter | Description | Signature | Date |
---|---|---|---|
|
Luigi Nono
>
Mimma Guastoni
No place |
LLET016023 | No date |
|
Luigi Nono
>
Claudio Abbado
,
Renzo Piano
No place |
LLET016101 | No date |
|
Mimma Guastoni
Milano |
LLET030562 | No date |
|
No place |
LLET030638 | No date |