| Year | 1949 |
| Date | 09-Jun |
| Volume | 100 |
| Issue | 2,507 |
| Page | 691 |
| Category | Petrol Engine Topics |
| Part | |
| Title | "Ladybird". A Twin-Cylinder 2.5 c.c. Compression-Ignition Engine |
| Author | Edgar T.Westbury |
| Notes | General arrangement, an important question, the "Ladybird" 2.5 c.c. engine, part-sectional perspective drawing, cylinder, piston and connecting-rod arrangement, crankshaft and crank-case arrangement, die-castings, constructional principles |