DUGiFonsEspecials

1970-12-31 Letter ​

1971-03-05 Letter ​

1971-09-11 Letter ​

1971-09-25 Letter ​

1971-09-30 Letter ​

1971-10-14 Letter ​

1971-11-13 Letter ​

1972-04-25 Letter ​

1972-06-27 Letter ​

1973-05-12 Letter ​

[1974] Letter ​

1974-01-05 Letter ​

1974-02-06 Letter ​

1976-02-10 Letter ​

1977-06-28 Letter ​

1990-10-16 Letter ​