| 1892 |
 |
| Stylised Owl |
| 1883 | 1893 |
 |
 |
 |
 |
| Unidentified Owl | Unidentified Owls |
| 1894 | 1898 |
 |
 |
 |
 |
| Unidentified Owl | Stylised Owl |
| 1900 |
 |
| Unidentified Owls |
| 1901 | 1904 |
 |
 |
 |
 |
| Stylised Owl | Stylised Owls |
| 1902 |
 |
| Stylised Owl |
| 19xx | 1904 |
 |
 |
 |
 |
| Stylised Owl | Stylised Owl |
| 1907 | 1919 |
 |
 |
 |
 |
| Stylised Owl | Stylised Owl |
| 1909 | 1910 |
 |
 |
 |
 |
| Stylised Owl | Unidentified Owls |
| 1910 | 1912 |
 |
 |
 |
 |
| Stylised Owl | Stylised Owl |
| 1913 | 1914 |
 |
 |
 |
 |
| Little Owl | Stylised Owl |
| 1914 |
 |
 |
| Stylised Owl |
| 1914 | 1918 |
 |
 |
 |
 |
| Stylised Owl | Stylised Owl |
| 1928 |
 |
| Stylised Owl |
| 1945 |
 |
| Stylised Owl |
| 1947 |
 |
| Stylised Owl |
| 1958 |
 |
|
Unidentified Owl |
| 1958 | 1962 |
 |
 |
 |
 |
| Stylised Owl | Unidentified Owl |
| 1987 | 1988 |
 |
 |
| Stylised Owl | Stylised Owl |
| 1988 |
 |
| Stylised Owl |
| 1989 |
 |
| Stylised Owl |
| 1995 |
 |
 |
| Stylised Owl |
| 1999 |
 |
| Snowy Owl |