| Year | 1986 |
| Date | 19-Dec |
| Volume | 157 |
| Issue | 3,791 |
| Page | 695 |
| Category | Steam |
| Part | 2 |
| Title | The "Realeaux" (Realux?) Diagram for Valve Gear Analysis |
| Author | Keith Wilson |
| Notes | Mid gear position and other equivalent eccentrics, Realeaux diagrams for locomotive links, Realeaux diagrams for Walschaerts gear |