UdG users
1990-10-10 Letter
1990-09-19 Letter
1989-12-15 Letter
1989-01-09 Letter
1988-04-30 Letter
1987-08-10 Letter
1986-02-09 Letter
1984-09-04 Letter
1984-05-30 Letter
1983-10-23 Letter
1983-03-24 Letter
1982-07-12 Letter
1981-11-15 Letter
1981-01-29 Letter
1980-08-07 Letter
1980-04-03 Letter
1979-09-10 Letter