| Year | 2007 |
| Date | 23-Nov |
| Volume | 199 |
| Issue | 4,313 |
| Page | 639 |
| Category | Keith's Column |
| Part | 4 |
| Title | 'Knotty'. A Unique Locomotive. Designed for 5in. and 7 1/4in. gauge |
| Author | Keith Wilson |
| Notes | Frictional theory, design of crank axles. Shay by Alan Beasley, 7 1/4"g. Knotty axles, to work etc., 7 1/4"g. Knotty axle jigs, Wilson's Words of Wisdom (G.R.S.Mead) |