| Year | 1938 |
| Date | 07-Jul |
| Volume | 79 |
| Issue | 1,939 |
| Page | 12 |
| Category | Road Roller |
| Part | |
| Title | A Working Model I.C. Engine-Driven Road Roller |
| Author | Edgar T.Westbury |
| Notes | Exhaust push-rod and guide fork, rollers, pivots, etc., contact-breaker, details of bracket, circuit diagram for battery and non-trembler coil ignition system, ignition circuit, cam-timing diagram |