| Year | 1949 |
| Date | 13-Jan |
| Volume | 100 |
| Issue | 2,486 |
| Page | 38 |
| Category | Internal Combustion |
| Part | |
| Title | Modifications and Additions to a 10 c.c. Engine |
| Author | L.G.Callis |
| Notes | Sectional view through complete crankcase assembly, rotary valve and spindle, seating, housing and end cover, cylinder head, tappet-operated contact-breaker |