| Year | 1979 |
| Date | 21-Dec |
| Volume | 145 |
| Issue | 3,623 |
| Page | 1,482 |
| Category | Steam |
| Part | 4 |
| Title | Governors. Their Operation and Construction |
| Author | Tubal Cain |
| Notes | Throttles & linkwork. general, appendix; estimation of spring strength for spring-controlled governor |