UdG users
1970-03-12 Letter
[s.d.] Letter
1969-03-05 Letter
1968-10-11 Letter
1962-09-09 Letter
1955 Letter
1950-06-02 Letter
1949-12-10 Letter
1948-12-21 Letter
1948-02-22 Letter
1947-11-07 Letter
1947-02-01 Letter
1945-07-31 Letter
1945-06-20 Letter
1942-10-08 Letter
1942-03-22 Letter
1942-01-24 Letter
1941-08-29 Letter
1941-04-09 Letter
1941-04-02 Letter
1941-04-01 Letter
1941-03-29 Letter
1941-03-26 Letter
1941-03-19 Letter