UdG users
1940-01-07 Letter
1940-01-27 Letter
1940-03-14 Letter
1940-04-04 Letter
1940-05-06 Letter
1940-07-24 Letter
1940-10-01 Letter
1940-10-02 Letter
1940-10-27 Letter
1940-11-06 Letter
1940-09-23 Letter
1941 Letter
1941-03-06 Letter
1941-05-12 Letter
1941-05-20 Letter
1941-06-19 Letter
1941-06-20 Letter
1941-09-04 Letter
1941-09-18 Letter
1941-09-30 Letter