| McDougall, William L.; ISMA Directory; 1913 | ISMA Directory | 1913-00-00 | | Captain |
| McDougall, William L.; ISMA Directory; 1914 | ISMA Directory | 1914-00-00 | | Captain |
| McDougall, William L.; ISMA Directory; 1918 | ISMA Directory | 1918-00-00 | | Captain |
| McDougall, William L.; ISMA Directory; 1919 | ISMA Directory | 1919-00-00 | | Captain |
| McDougall, William L.; ISMA Directory; 1920 | ISMA Directory | 1920-00-00 | | Captain |
| McDougall, William L.; ISMA Directory; 1921 | ISMA Directory | 1921-00-00 | | Captain |
| McDougall, William L.; ISMA Directory; 1924 | ISMA Directory | 1924-00-00 | SULTANA | Captain |
| McDougall, William L.; ISMA Directory; 1925 | ISMA Directory | 1925-00-00 | SULTANA | Captain |
| McDougall, William L.; ISMA Directory; 1926 | ISMA Directory | 1926-00-00 | SULTANA | Captain |
| McDougall, William L.; ISMA Directory; 1927 | ISMA Directory | 1927-00-00 | SULTANA | Captain |
| McDougall, William L.; ISMA Directory; 1931 | ISMA Directory | 1931-00-00 | BRADLEY, M.A. | Captain |