| Year | 1999 |
| Date | 03-Dec |
| Volume | 183 |
| Issue | 4,108 |
| Page | 684 |
| Category | General |
| Part | 9 |
| Title | Letter to a Grandson |
| Author | M.J.H. Ellis |
| Notes | Accounts of heat treatments. Heat in the workshop, shrink fit, forging, annealing, hardening and tempering, editorial footnote |