| Year | 2021 |
| Date | 01-Jan |
| Volume | 226 |
| Issue | 4,655 |
| Page | 108 |
| Category | Historic |
| Part | 16 |
| Title | The Stationary Steam Engine |
| Author | Ron Fitzgerald |
| Notes | Expansive Working, Promise Deferred. Takes a look at the history and development of the stationary steam engine. Graphical presentation of steam expansion in the cylinder as shown in the 1782 patent, references |