| Horn, George; ISMA Directory; 1906 | ISMA Directory | 1906-00-00 | TRANSFER | Captain |
| Horn, George; ISMA Directory; 1908 | ISMA Directory | 1908-00-00 | TRANSPORT | Captain |
| Horn, George; ISMA Directory; 1909 | ISMA Directory | 1909-00-00 | TRANSFER | Captain |
| Horn, George; ISMA Directory; 1910 | ISMA Directory | 1910-00-00 | TRANSFER | Captain |
| Horn, George; ISMA Directory; 1914 | ISMA Directory | 1914-00-00 | BRAINARD, KATIE | Captain |
| Horn, George; ISMA Directory; 1916 | ISMA Directory | 1916-00-00 | BRAINARD, KATIE | Captain |
| Horn, George; ISMA Directory; 1917 | ISMA Directory | 1917-00-00 | BRAINARD, KATIE | Captain |