| Hedglin, Thomas; 1921 Red Book; 1921 | 1921 Red Book | 1921-00-00 | HAROLD B. NYE | Chief Engineer |
| Hedglin, Thomas; 1922 Red Book; 1922 | 1922 Red Book | 1922-00-00 | HAROLD B. NYE | Chief Engineer |
| Hedglin, Thomas; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | MARIPOSA | Chief Engineer |
| Hedglin, Thomas; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | MARIPOSA | Chief Engineer |
| Hedglin, Thomas; 1942 Red Book; 1942 | 1942 Red Book | 1942-00-00 | GEORGE STEPHENSON | Chief Engineer |
| Hedglin, Thomas; 1944 Red Book; 1944 | 1944 Red Book | 1944-00-00 | GEORGE STEPHENSON | Chief Engineer |
| Hedglin, Thomas; Great Lakes Review May1945 | Great Lakes Review May1945 | 1945-00-00 | GEORGE STEPHENSON | Chief Engineer |
| Hedglin, Thomas; Great Lakes Review, 5/46; 1946 | Great Lakes Review, 5/46 | 1946-00-00 | SIR WILLIAM FAIRBAIRN | Chief Engineer |