| Year | 1953 |
| Date | 03-Dec |
| Volume | 109 |
| Issue | 2,741 |
| Page | 666 |
| Category | More Utility Steam Engines |
| Part | |
| Title | The "Cygnet". A Single-Acting Horizontal Twin |
| Author | Edgar T.Westbury |
| Notes | Piston yoke, connecting-rods, piston assembly, rotary valve, return crank, assembly, apologies to constructors ("Unicorn" mill engine) |