| Year | 2011 |
| Month | June |
| Volume | 32 |
| Issue | 12 |
| Page | 398 |
| Author | Watson Willinson |
| Subject | Locomotive |
| Key Word | Full design details and drawings for a Propane Locomotive Boiler 7 1/4" Gauge Romulus |
| Article Title | Propane Burner Construction for a 7 1/4" Gauge Romulus Locomotive Part 1 |