UdG users
1955-12 Letter
1955-06-28 Letter
1954-10-17 Letter
1954-07-10 Letter
1953-12-03 Letter
1953-11-26 Letter
1953 Letter
1952-08-15 Letter
1951-06-27 Letter
1950-11-04 Letter
1950-08-11 Letter
1950-06-11 Letter
1950-05-29 Letter
1950-05-13 Letter
1949-05-24 Letter
1949-02-19 Letter
1947-12-13 Letter
1947-11-26 Letter
1947-11-08 Letter
1947-11-05 Letter
1947-10-17 Letter
1947-10-07 Letter
1947-07-30 Letter
1947-05-07 Letter