| Year | 1955 |
| Date | 23-Jun |
| Volume | 112 |
| Issue | 2,822 |
| Page | 699 |
| Category | Electrical |
| Part | |
| Title | Constructing a Reversing Switch |
| Author | "Duplex" |
| Notes | With the cover removed, ebonite baseplate, contactors and drum bearings, armature terminal bars, wiring connections for shunt- and series-wound motors, assembling the switch |