| Christiansen, George W.; ISMA Directory; 1947 | ISMA Directory | 1947-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1948 | ISMA Directory | 1948-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1949 | ISMA Directory | 1949-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1950 | ISMA Directory | 1950-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1951 | ISMA Directory | 1951-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1961 | ISMA Directory | 1961-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1963 | ISMA Directory | 1963-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1964 | ISMA Directory | 1964-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1965 | ISMA Directory | 1965-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1966 | ISMA Directory | 1966-00-00 | | |
| Christiansen, George W.; ISMA Directory; 1967 | ISMA Directory | 1967-00-00 | | |