| Year | 1924 |
| Date | 10-Jan |
| Volume | 50 |
| Issue | 1,185 |
| Page | 41 |
| Category | Locomotive |
| Part | |
| Title | A Large Spirit-Fired 2 1/2-in. Gauge Experimental Locomotive |
| Author | Henry Greenly |
| Notes | Challenger. 2-8-2 experimental 2 1/2-in gauge three-cylinder locomotive, crank effort diagram, distortion of theoretical crank effort diagram by indicator diagram, underneath view of tender, outside cylinders and motion, water tube boiler, bogie tender, inside cylinder and motion, main framing and wheel arrangement |