| Langan, Bernard; 1930 Red Book; 1930 | 1930 Red Book | 1930-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1931 Red Book; 1931 | 1931 Red Book | 1931-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1932 Red Book; 1932 | 1932 Red Book | 1932-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1933 Red Book; 1933 | 1933 Red Book | 1933-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1934 Red Book; 1934 | 1934 Red Book | 1934-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1935 Red Book; 1935 | 1935 Red Book | 1935-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1936 Red Book; 1936 | 1936 Red Book | 1936-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1938 Red Book; 1938 | 1938 Red Book | 1938-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1939 Red Book; 1939 | 1939 Red Book | 1939-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; 1942 Red Book; 1942 | 1942 Red Book | 1942-00-00 | COALFAX | Chief Engineer |
| Langan, Bernard; Great Lakes News 5/43; 1943 | Great Lakes News 5/43 | 1943-00-00 | COALFAX | Chief Engineer |