| Year | 2012 |
| Date | 23-Mar |
| Volume | 208 |
| Issue | 4,426 |
| Page | 454 |
| Category | Stationary Engine |
| Part | 5 |
| Title | An American Popcorn Engine |
| Author | Stewart Hart |
| Notes | Continues his American popcorn roasting engine. Cylinder base, valve rod flexible coupling, slide valve rod guide, engine base plate, assembling the engine, setting the valve timing |