UdG users
1925-04-04 Letter
1925-07-01 Letter
1925-07-02 Letter
1925-07-06 Letter
1925-07-12 Letter
1925-11 Letter
1925-11-25 Letter
1927-03-29 Letter
1933-10-21 Letter
1934-10-18 Letter
1934-12-24 Letter
1939-03-14 Letter
1940-03-02 Letter
1944-01-07 Letter
1946-06-22 Letter
1946-11-15 Letter
1948-10-22 Letter
1948-12-22 Letter