Letter | Description | Signature | Date |
---|---|---|---|
|
Alfred Brüggemann
>
Ricordi
Coblenza, Germania |
LLET003222 | No date |
|
Ildebrando Pizzetti
>
Ricordi
Villabassa, Bolzano |
LLET013768 | No date |
|
Luciana Pestalozza Abbado
>
Eugenio Clausetti
Milano |
LLET031059 | No date |