| Year | 2023 |
| Date | 17-Nov |
| Volume | 231 |
| Issue | 4,730 |
| Page | 682 |
| Category | Historic |
| Part | 52 |
| Title | The Stationary Steam Engine |
| Author | Ron Fitzgerald |
| Notes | The Early Career of Richard Trevithick II and Edward Bull. Takes a look at the history and development of the stationary steam engine. Balcoath Bull Engine of 1792, drawing of a Bull engine by Richard Trevithick, references |