| Year | 2020 |
| Date | 24-Apr |
| Volume | 224 |
| Issue | 4,637 |
| Page | 634 |
| Category | Locomotive |
| Part | 2 |
| Title | The American Locomotive |
| Author | David Rollinson |
| Notes | Traces the development of the American railroad locomotive. The Stephenson link motion, the Westinghouse 'automatic' air brake, an American cab (Photo, Lake Superior Railroad Museum), the site of the Golden Spike ceremony at Promontory Summit Utah (Photo, United States Park Service), cross section of a wagon top boiler, references |