UdG users
1924-10-01 Letter
1934-04-18 Letter
1934-08-19 Letter
1939-04-10 Letter
1939-04-23 Letter
1939-05-07 Letter
1939-06-04 Letter
1939-07-06 Letter
1939-07-09 Letter
1939-07-21 Letter
1939-12-14 Letter
1941-09-18 Letter
1942-02-28 Letter
1942-10-24 Letter
1943-10-10 Letter
1945-09-11 Letter
1946-10-25 Letter
1947-05-21 Letter
1947-05-26 Letter
1948-04-04 Letter