UdG users
1972-03-29 Letter
1972-03-03 Letter
1972-01-17 Letter
1971-12-29 Letter
1970-08-20 Letter
1968-11-11 Letter
1968-09-07 Letter
1968-08-19 Letter
1968-03-12 Letter
1967-06-25 Letter
1967-05-17 Letter
1967-03-14 Letter
1967-02-19 Letter
1966-06-08 Letter
1966-06-02 Letter
1966-01-16 Letter
1965-12-20 Letter
1964-11-16 Letter
1964-06-21 Letter
1964-05-27 Letter
1964-01-08 Letter
1963-07-25 Letter
1963-06-23 Letter
1963-03-29 Letter