| Year | 1967 |
| Date | 04-Aug |
| Volume | 133 |
| Issue | 3,326 |
| Page | 752 |
| Category | Agricultural |
| Part | |
| Title | John Heathcoat's Plough |
| Author | C.R.Tyler |
| Notes | The first steam driven plough. Illustration from Farmers Magazine, Ambrose Blacklock's booklet, an expedition, a problem, the model |