| Wilkinson, R. G.; 1923 Red Book; 1923 | 1923 Red Book | 1923-00-00 | MAPLEHEATH | Chief Engineer |
| Wilkinson, R. G.; 1924 Red Book; 1924 | 1924 Red Book | 1924-00-00 | MAPLEHEATH | Chief Engineer |
| Wilkinson, R. G.; 1925 Red Book; 1925 | 1925 Red Book | 1925-00-00 | MAPLEHEATH | Chief Engineer |
| Wilkinson, R. G.; 1926 Red Book | 1926 Red Book | | MAPLEHEATH | Chief Engineer |
| Wilkinson, R. G.; 1927 Red Book; 1927 | 1927 Red Book | 1927-00-00 | WINONA | Chief Engineer |
| Wilkinson, R. G.; 1928 Red Book; 1928 | 1928 Red Book | 1928-00-00 | WINONA | Chief Engineer |
| Wilkinson, R. G.; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | WINONA | Chief Engineer |
| Wilkinson, R. G.; 1932 Red Book; 1932 | 1932 Red Book | 1932-00-00 | WINONA | Chief Engineer |
| Wilkinson, R. G.; 1933 Red Book; 1933 | 1933 Red Book | 1933-00-00 | WINONA | Chief Engineer |
| Wilkinson, R. G.; 1934 Red Book; 1934 | 1934 Red Book | 1934-00-00 | WINONA | Chief Engineer |
| Wilkinson, R. G.; 1935 Red Book; 1935 | 1935 Red Book | 1935-00-00 | WINONA | Chief Engineer |