UdG users
1979-10-01 Letter
1987-03-17 Letter
1987-04-21 Letter
1987-06-15 Letter
1987-10-22 Letter
1987-12-07 Letter
1988-01-14 Letter
1988-02-12 Letter
1988-06-08 Letter
1988-06-28 Letter
1988-09-12 Letter
1988-11-14 Letter
1988-12-19 Letter