| Year | 2020 |
| Date | 31-Jul |
| Volume | 225 |
| Issue | 4,644 |
| Page | 189 |
| Category | Stationary Engine |
| Part | |
| Title | Park Street Mill Engine |
| Author | Diane Carney |
| Notes | Provides the background to the engine that features in the following article by Helmut Heitzinger (Musgrave engine) |