| Koch, E. Arnold; ISMA Directory; 1942 | ISMA Directory | 1942-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1943 | ISMA Directory | 1943-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1944 | ISMA Directory | 1944-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1945 | ISMA Directory | 1945-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1946 | ISMA Directory | 1946-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1947 | ISMA Directory | 1947-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1948 | ISMA Directory | 1948-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1954 | ISMA Directory | 1954-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1955 | ISMA Directory | 1955-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1956 | ISMA Directory | 1956-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1957 | ISMA Directory | 1957-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1958 | ISMA Directory | 1958-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1959 | ISMA Directory | 1959-00-00 | | |
| Koch, E. Arnold; ISMA Directory; 1960 | ISMA Directory | 1960-00-00 | | |