| Year | 1942 |
| Date | 27-Aug |
| Volume | 87 |
| Issue | 2,155 |
| Page | 203 |
| Category | Locomotive |
| Part | |
| Title | 3 1/2-in. Gauge Boilers: "A Bit of Ancient History |
| Author | LBSC |
| Notes | Evolution. boilers need special attention, combustion chambers, boiler for 3 1/2"g. "Green Arrow", section through firebox, hints on designing a 3 1/2-in. gauge boiler, typical example of 3 1/2-in. gauge boiler, stays, blowlamp nipples as injector cones? |