| Mahon, M. H.; ISMA Directory; 1907 | ISMA Directory | 1907-00-00 | POPE, E.C. | Captain |
| Mahon, M. H.; ISMA Directory; 1908 | ISMA Directory | 1908-00-00 | | Captain |
| Mahon, M. H.; ISMA Directory; 1909 | ISMA Directory | 1909-00-00 | PENOBSCOT | Captain |
| Mahon, M. H.; ISMA Directory; 1910 | ISMA Directory | 1910-00-00 | | Captain |
| Mahon, M. H.; ISMA Directory; 1911 | ISMA Directory | 1911-00-00 | | Captain |
| Mahon, M. H.; ISMA Directory; 1912 | ISMA Directory | 1912-00-00 | | Captain |
| Mahon, M. H.; ISMA Directory; 1913 | ISMA Directory | 1913-00-00 | | Captain |
| Mahon, M. H.; ISMA Directory; 1914 | ISMA Directory | 1914-00-00 | | Captain |
| Mahon, M. H.; ISMA Directory; 1916 | ISMA Directory | 1916-00-00 | ROUMANIA | Captain |
| Mahon, M. H.; ISMA Directory; 1917 | ISMA Directory | 1917-00-00 | ROUMANIA | Captain |
| Mahon, M. H.; ISMA Directory; 1918 | ISMA Directory | 1918-00-00 | REISS, WM. A. | Captain |
| Mahon, M. H.; ISMA Directory; 1919 | ISMA Directory | 1919-00-00 | REISS, WILLIAM A. | Captain |
| Mahon, M. H.; ISMA Directory; 1920 | ISMA Directory | 1920-00-00 | REISS, WILLIAM A. | Captain |
| Mahon, M. H.; ISMA Directory; 1921 | ISMA Directory | 1921-00-00 | BYERS, A.M. | Captain |
| Mahon, M. H.; ISMA Directory; 1922 | ISMA Directory | 1922-00-00 | BYERS, A.M. | Captain |