| Oppermann, Fred H.; ISMA Directory; 1956 | ISMA Directory | 1956-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1957 | ISMA Directory | 1957-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1958 | ISMA Directory | 1958-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1959 | ISMA Directory | 1959-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1960 | ISMA Directory | 1960-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1961 | ISMA Directory | 1961-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1963 | ISMA Directory | 1963-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1964 | ISMA Directory | 1964-00-00 | | |
| Oppermann, Fred H.; ISMA Directory; 1965 | ISMA Directory | 1965-00-00 | | |