| Welsh, Thomas H.; 1899 Red Book; 1899 | 1899 Red Book | 1899-00-00 | CENTURION | Chief Engineer |
| Welsh, Thomas H.; 1900 Red Book; 1900 | 1900 Red Book | 1900-00-00 | CENTURION | Chief Engineer |
| Welsh, Thomas H.; 1901 Red Book; 1901 | 1901 Red Book | 1901-00-00 | PONTIAC | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ONTARIO | fireman |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ONTARIO | fireman |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ONTARIO | Oiler |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ONTARIO | First Assistant |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SANILAC | First Assistant |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SANILAC | First Assistant |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SANILAC | First Assistant |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SAGINAW VALLEY | First Assistant |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SAGINAW VALLEY | First Assistant |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | WALTER L. FROST | First Assistant |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | WALTER L. FROST | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | WALTER L. FROST | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | WALTER L. FROST | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | WALTER L. FROST | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | JAMES R. LANGDON | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | IOSCO | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | IOSCO | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | IOSCO | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | IOSCO | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | IOSCO | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | CENTURION | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | CENTURION | Chief Engineer |
| Welsh, Thomas H.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | CENTURION | Chief Engineer |