| Year | 1910 |
| Date | 15-Dec |
| Volume | 23 |
| Issue | 503 |
| Page | 566 |
| Category | Internal Combustion |
| Part | |
| Title | How a Slide Gas Engine was Modernised |
| Author | William H.Bass |
| Notes | Combustion head end of engine after alteration, showing alterations, gas valve & governing arrangement, built-up cam for opertaing gas valve, wiring diagram of ignition connections |