| Year | 2012 |
| Date | 20-Apr |
| Volume | 208 |
| Issue | 4,428 |
| Page | 581 |
| Category | Stationary Engine |
| Part | 7 |
| Title | An American Popcorn Engine |
| Author | Stewart Hart |
| Notes | Continues his American popcorn roasting engine. Whistle and valve, governor assembly, finishing off the engine |