| Williams, Owen; 1931 Red Book; 1931 | 1931 Red Book | 1931-00-00 | LOCKWELL | Chief Engineer |
| Williams, Owen; 1932 Red Book; 1932 | 1932 Red Book | 1932-00-00 | LOCKWELL | Chief Engineer |
| Williams, Owen; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | BERRYTON | Chief Engineer |
| Williams, Owen; 1938 Red Book; 1938 | 1938 Red Book | 1938-00-00 | BERRYTON | Chief Engineer |
| Williams, Owen; 1939 Red Book; 1939 | 1939 Red Book | 1939-00-00 | BERRYTON | Chief Engineer |
| Williams, Owen; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | BERRYTON | Chief Engineer |
| Williams, Owen; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | BERRYTON | Chief Engineer |
| Williams, Owen; 1943 Red Book; 1943 | 1943 Red Book | 1943-00-00 | VISCOUNT BENNETT | Chief Engineer |
| Williams, Owen; 1944 Red Book; 1944 | 1944 Red Book | 1944-00-00 | VISCOUNT BENNETT | Chief Engineer |
| Williams, Owen; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | MATHEWSTON | Chief Engineer |
| Williams, Owen; 1946 Red Book; 1946 | 1946 Red Book | 1946-00-00 | MATHEWSON | Chief Engineer |