| Atkinson, George A.; ISMA Directory; 1911 | ISMA Directory | 1911-00-00 | MAJOR | Captain |
| Atkinson, George A.; ISMA Directory; 1912 | ISMA Directory | 1912-00-00 | MAJOR | Captain |
| Atkinson, George A.; ISMA Directory; 1913 | ISMA Directory | 1913-00-00 | | Captain |
| Atkinson, George A.; ISMA Directory; 1914 | ISMA Directory | 1914-00-00 | MACK, WILLIAM HENRY | Captain |
| Atkinson, George A.; ISMA Directory; 1916 | ISMA Directory | 1916-00-00 | SQUIRE, F.B. | Captain |
| Atkinson, George A.; ISMA Directory; 1917 | ISMA Directory | 1917-00-00 | SHAUGHNESSY, SIR THOMAS | Captain |
| Atkinson, George A.; ISMA Directory; 1918 | ISMA Directory | 1918-00-00 | SHAUGHNESSY, SIR THOMAS | Captain |
| Atkinson, George A.; ISMA Directory; 1919 | ISMA Directory | 1919-00-00 | SHAUGHNESSY, SIR THOMAS | Captain |
| Atkinson, George A.; ISMA Directory; 1920 | ISMA Directory | 1920-00-00 | SHAUGHNESSY, SIR THOMAS | Captain |
| Atkinson, George A.; ISMA Directory; 1921 | ISMA Directory | 1921-00-00 | SHAUGHNESSY, SIR THOMAS | Captain |
| Atkinson, George A.; ISMA Directory; 1922 | ISMA Directory | 1922-00-00 | SHAUGHNESSY, SIR THOMAS | Captain |
| Atkinson, George A.; ISMA Directory; 1923 | ISMA Directory | 1923-00-00 | SHAUGHNESSY, SIR THOMAS | Captain |
| Atkinson, George A.; ISMA Directory; 1924 | ISMA Directory | 1924-00-00 | | Captain |
| Atkinson, George A.; ISMA Directory; 1925 | ISMA Directory | 1925-00-00 | JENKINS, CHARLES O. | Captain |
| Atkinson, George A.; ISMA Directory; 1926 | ISMA Directory | 1926-00-00 | JENKINS, CHARLES O. | Captain |
| Atkinson, George A.; ISMA Directory; 1927 | ISMA Directory | 1927-00-00 | | Captain |
| Atkinson, George A.; ISMA Directory; 1928 | ISMA Directory | 1928-00-00 | | Captain |
| Atkinson, George A.; ISMA Directory; 1929 | ISMA Directory | 1929-00-00 | | Captain |
| Atkinson, George A.; ISMA Directory; 1931 | ISMA Directory | 1931-00-00 | | Captain |