| Year | 1949 |
| Date | 29-Sep |
| Volume | 101 |
| Issue | 2,523 |
| Page | 417 |
| Category | Road Locomotive |
| Part | |
| Title | Traction Engines not so Well Known |
| Author | Ronald H.Clark |
| Notes | Savages, annular compound showman's engine, general arrangement of cylinder block, erector's eye view, the first double-crank compound showman's engine |