| Ehmke, Arthur E.; ISMA Directory; 1921 | ISMA Directory | 1921-00-00 | | Captain |
| Ehmke, Arthur E.; ISMA Directory; 1922 | ISMA Directory | 1922-00-00 | | Captain |
| Ehmke, Arthur E.; ISMA Directory; 1923 | ISMA Directory | 1923-00-00 | | Captain |
| Ehmke, Arthur E.; ISMA Directory; 1924 | ISMA Directory | 1924-00-00 | | Captain |
| Ehmke, Arthur E.; ISMA Directory; 1925 | ISMA Directory | 1925-00-00 | | Captain |
| Ehmke, Arthur E.; ISMA Directory; 1926 | ISMA Directory | 1926-00-00 | | Captain |
| Ehmke, Arthur E.; ISMA Directory; 1927 | ISMA Directory | 1927-00-00 | | Captain |
| Ehmke, Arthur E.; ISMA Directory; 1928 | ISMA Directory | 1928-00-00 | | Captain |