| Year | 1923 |
| Date | 24-May |
| Volume | 48 |
| Issue | 1,152 |
| Page | 537 |
| Category | Railway |
| Part | |
| Title | A Model Switchback Railway |
| Author | Geo. C.Orpet |
| Notes | General view, structural plan, outline sketch, details of construction, developed diagram of track rise and fall, driving gear and details |