| Van Derwerken, Harry; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | H. A. MELDRUM | Chief Engineer |
| Van Derwerken, Harry; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | H. A. MELDRUM | Chief Engineer |
| Van Derwerken, Harry; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | H. A. MELDRUM | Chief Engineer |
| Van Derwerken, Harry; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | H. A. MELDRUM | Chief Engineer |
| Van Derwerken, Harry; 1954 Red Book; 1954 | 1954 Red Book | 1954-00-00 | H. A. MELDRUM | Chief Engineer |
| Van Derwerken, Harry; 1955 Red Book; 1955 | 1955 Red Book | 1955-00-00 | H. A. MELDRUM | Chief Engineer |
| Van Derwerken, Harry; 1956 Red Book; 1956 | 1956 Red Book | 1956-00-00 | H. A. MELDRUM | Chief Engineer |