| Viksjo, John; ISMA Directory; 1938 | ISMA Directory | 1938-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1939 | ISMA Directory | 1939-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1940 | ISMA Directory | 1940-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1941 | ISMA Directory | 1941-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1942 | ISMA Directory | 1942-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1943 | ISMA Directory | 1943-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1944 | ISMA Directory | 1944-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1945 | ISMA Directory | 1945-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1946 | ISMA Directory | 1946-00-00 | | Captain |
| Viksjo, John; ISMA Directory; 1947 | ISMA Directory | 1947-00-00 | | Captain |