| Year | 1923 |
| Date | 22-Feb |
| Volume | 48 |
| Issue | 1,139 |
| Page | 205 |
| Category | Automotive |
| Part | |
| Title | A "Ford" Spark Coil Conversion |
| Author | H.H.Ward |
| Notes | Milled lock nuts for contact-breaker adjustment, side and end views, coil with studs, commutating switch, connections |