| Williams, Owen E.; 1923 Red Book; 1923 | 1923 Red Book | 1923-00-00 | TREVISA | Chief Engineer |
| Williams, Owen E.; 1924 Red Book; 1924 | 1924 Red Book | 1924-00-00 | TREVISA | Chief Engineer |
| Williams, Owen E.; 1925 Red Book; 1925 | 1925 Red Book | 1925-00-00 | TREVISA | Chief Engineer |
| Williams, Owen E.; 1926 Red Book | 1926 Red Book | | TREVISA | Chief Engineer |
| Williams, Owen E.; 1927 Red Book; 1927 | 1927 Red Book | 1927-00-00 | TREVISA | Chief Engineer |
| Williams, Owen E.; 1928 Red Book; 1928 | 1928 Red Book | 1928-00-00 | TREVISA | Chief Engineer |
| Williams, Owen E.; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | TREVISA | Chief Engineer |