UdG users
1931-12-24 Letter
1934-04-18 Letter
1934-08-19 Letter
1935-10-13 Letter
1936-07-20 Letter
1937-07-22 Letter
1937-11-07 Letter
1937-11-22 Letter
1937-12-23 Letter
1938-10-06 Letter
1938-12-24 Letter
1939 Letter
1939-01-06 Letter
1939-03-12 Letter
1939-03-17 Letter
1939-03-23 Letter
1939-03-26 Letter
1939-03-27 Letter
1939-03-28 Letter