| Specht, Arnold | | | CALCITE II | Chief Engineer |
| Specht, Arnold | | | CHIEF WAWATAM | Chief Engineer |
| Specht, Arnold; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | CALCITE | First Assistant |
| Specht, Arnold; 1957 Red Book; 1957 | 1957 Red Book | 1957-00-00 | CEDARVILLE | Chief Engineer |
| Specht, Arnold; 1958 Red Book; 1958 | 1958 Red Book | 1958-00-00 | CEDARVILLE | Chief Engineer |
| Specht, Arnold; 1959 Red Book; 1959 | 1959 Red Book | 1959-00-00 | CEDARVILLE | Chief Engineer |
| Specht, Arnold; 1960 Red Book; 1960 | 1960 Red Book | 1960-00-00 | CEDARVILLE | Chief Engineer |
| Specht, Arnold; 1961 Red Book; 1961 | 1961 Red Book | 1961-00-00 | WILLIAM G. CLYDE | Chief Engineer |
| Specht, Arnold; 1962 Red Book; 1962 | 1962 Red Book | 1962-00-00 | CALCITE II | Chief Engineer |
| Specht, Arnold; 1963 Red Book; 1963 | 1963 Red Book | 1963-00-00 | CALCITE II | Chief Engineer |
| Specht, Arnold; 1964 Red Book; 1964 | 1964 Red Book | 1964-00-00 | CALCITE II | Chief Engineer |
| Specht, Arnold; 1965 Red Book; 1965 | 1965 Red Book | 1965-00-00 | CALCITE II | Chief Engineer |
| Specht, Arnold; 1966 Red Book; 1965 | 1966 Red Book | 1965-00-00 | CALCITE II | Chief Engineer |
| Specht, Arnold; 1981 Red Book; 1981 | 1981 Red Book | 1981-00-00 | CHIEF WAWATAM | Chief Engineer |
| Specht, Arnold; 1982 Red Book; 1982 | 1982 Red Book | 1982-00-00 | CHIEF WAWATAM | Chief Engineer |
| Specht, Arnold; 8/48 Great Lakes Review; 1948 | 8/48 Great Lakes Review | 1948-00-00 | CALCITE | First Assistant |
| Specht, Arnold; Great Lake Review 4/42; 1942 | Great Lake Review 4/42 | 1942-00-00 | W. F. WHITE | Third Assistant |
| Specht, Arnold; Great Lakes News 5/43; 1943 | Great Lakes News 5/43 | 1943-00-00 | W. F. WHITE | Second Assistant |
| Specht, Arnold; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | W. F. WHITE | Second Assistant |