| Year | 1929 |
| Date | 19-Sep |
| Volume | 61 |
| Issue | 1,480 |
| Page | 267 |
| Category | Locomotive |
| Part | |
| Title | Model Locomotive Matters |
| Author | James C.Crebbin |
| Notes | Experiences of the author. Superheating in models, port areas and valves, testing "Cosmo Bonsor", the value of the brick arch, firebox type of superheater, adjustable exhaust control, ports for balanced valve, safety valves, funnels and exhausts |