| Year | 1949 |
| Date | 17-Nov |
| Volume | 101 |
| Issue | 2,530 |
| Page | 635 |
| Category | Steam |
| Part | |
| Title | Utility Steam Engines (Humming Bird) |
| Author | Edgar T.Westbury |
| Notes | Spacing block, steamchest cover, construction of the "Humming Bird" engine, cylinder liners, steamchest, cover and port plate, slide-valve and rod, eccentric sheave and rod, valve rocker and bracket |