| Year | 1931 |
| Date | 27-Aug |
| Volume | 65 |
| Issue | 1,581 |
| Page | 205 |
| Category | Locomotive |
| Part | |
| Title | Multi-purpose Steam Cylinders. Principally for Outside Cylinder Model Locomotives |
| Author | Geo. Gentry |
| Notes | Some general points on the design, some details of other scale cylinders, tractive efforts, percentage of cut-off, construction of piston for 3/4-in. scale cylinders |