| Year | 1953 |
| Date | 10-Sep |
| Volume | 109 |
| Issue | 2,729 |
| Page | 304 |
| Category | More Utility Steam Engines |
| Part | |
| Title | The "Unicorn" mill engine |
| Author | Edgar T.Westbury |
| Notes | Piston & rod assembly, valve-rod and nut, knuckle joint, milling, governor gear, eccentric straps and rods, throttle valve |