| Year | 1929 |
| Date | 11-Apr |
| Volume | 60 |
| Issue | 1,457 |
| Page | 354 |
| Category | Practical Letters from Our Readers |
| Part | |
| Title | Three-cylinder Compound Marine Engine Model |
| Author | J.James |
| Notes | The late Ardwick Engineering Co.'s drawings of 3-cylinder compound engines for the "Servia" |