| Year | 1929 |
| Date | 16-May |
| Volume | 60 |
| Issue | 1,462 |
| Page | 463 |
| Category | Locomotive |
| Part | |
| Title | A Model "Planet" Type Locomotive. An Old-timer: Some Notes on How to Build Her |
| Author | Geo. Gentry |
| Notes | The trunnion block, the arrangement of ports, boring trunnion block from the solid, marking off for drilling, drilling ports, drilling the holes for steam and exhaust, drilling the cross ports of cylinders, position of screws for fixing trunnion block |