| Year | 1935 |
| Date | 14-Mar |
| Volume | 72 |
| Issue | 1,766 |
| Page | 252 |
| Category | Educational |
| Part | |
| Title | A Walschaerts Valve Gear Demonstration Model for Beginners |
| Author | H.A.Cox |
| Notes | Layout, slide valve dimensions, the cardboard model, combination lever, crosshead and drag links, cardboard model, expansion link, tail link, movement of valve by return crank, throw of return crank, length of return crank eccentric rod |