| McCallum, George W.; ISMA Directory; 1904 | ISMA Directory | 1904-00-00 | | Captain |
| McCallum, George W.; ISMA Directory; 1908 | ISMA Directory | 1908-00-00 | CORONA | Captain |
| McCallum, George W.; ISMA Directory; 1909 | ISMA Directory | 1909-00-00 | FAIRBAIRN, SIR WILLIAM | Captain |
| McCallum, George W.; ISMA Directory; 1910 | ISMA Directory | 1910-00-00 | FAIRBAIRN, SIR WILLIAM | Captain |
| McCallum, George W.; ISMA Directory; 1911 | ISMA Directory | 1911-00-00 | MATAAFA | Captain |
| McCallum, George W.; ISMA Directory; 1912 | ISMA Directory | 1912-00-00 | MATAAFA | Captain |
| McCallum, George W.; ISMA Directory; 1913 | ISMA Directory | 1913-00-00 | MATAAFA | Captain |
| McCallum, George W.; ISMA Directory; 1914 | ISMA Directory | 1914-00-00 | POE | Captain |
| McCallum, George W.; ISMA Directory; 1916 | ISMA Directory | 1916-00-00 | ELLWOOD, I.L. | Captain |
| McCallum, George W.; ISMA Directory; 1917 | ISMA Directory | 1917-00-00 | FRICK, H.C. | Captain |
| McCallum, George W.; ISMA Directory; 1918 | ISMA Directory | 1918-00-00 | ROGERS | Captain |
| McCallum, George W.; ISMA Directory; 1919 | ISMA Directory | 1919-00-00 | ROGERS | Captain |
| McCallum, George W.; ISMA Directory; 1920 | ISMA Directory | 1920-00-00 | ROGERS | Captain |