| Koenig, William H.; ISMA Directory; 1931 | ISMA Directory | 1931-00-00 | | |
| Koenig, William H.; ISMA Directory; 1932 | ISMA Directory | 1932-00-00 | | |
| Koenig, William H.; ISMA Directory; 1933 | ISMA Directory | 1933-00-00 | | |
| Koenig, William H.; ISMA Directory; 1934 | ISMA Directory | 1934-00-00 | | |
| Koenig, William H.; ISMA Directory; 1935 | ISMA Directory | 1935-00-00 | | |
| Koenig, William H.; ISMA Directory; 1936 | ISMA Directory | 1936-00-00 | | |
| Koenig, William H.; ISMA Directory; 1937 | ISMA Directory | 1937-00-00 | | |
| Koenig, William H.; ISMA Directory; 1938 | ISMA Directory | 1938-00-00 | | |