| Letter | Description | Signature | Date |
|---|---|---|---|
|
Eugenio Clausetti
,
Franco Colombo
>
Fernando Mingozzi
No place |
LLET026017 | No date |
|
Luigi Bai
,
Guido Valcarenghi
>
Fernando Mingozzi
No place |
LLET026026 | No date |
|
Luigi Bai
,
Eugenio Clausetti
>
Fernando Mingozzi
No place |
LLET026029 | No date |
|
Ricordi
>
Fernando Mingozzi
No place |
LLET026031 | No date |
|
Fernando Mingozzi
>
Luigi Bai
No place |
LLET026027 | No date |