| Year | 1949 |
| Date | 03-Nov |
| Volume | 101 |
| Issue | 2,528 |
| Page | 579 |
| Category | Steam |
| Part | |
| Title | Utility Steam Engines (Humming Bird) |
| Author | Edgar T.Westbury |
| Notes | Proposed design for a poppet-valve uniflow engine with link-operated valve-gear, modified design adapted for fabricated construction, a vertical twin engine, the "Humming Bird" twin single-acting slide-valve engine |