| Year | 2012 |
| Date | 09-Mar |
| Volume | 208 |
| Issue | 4,425 |
| Page | 373 |
| Category | Stationary Engine |
| Part | 11 |
| Title | Armstrong's Hydraulic Pumping Engine |
| Author | Anthony Mount |
| Notes | Concludes his design. Drive pulley, wooden base, studs, nameplate, governor spring, oil cups, wooden lagging, assembly, painting, back to assembly |