| Year | 1930 |
| Date | 22-May |
| Volume | 62 |
| Issue | 1,515 |
| Page | 491 |
| Category | Electrical |
| Part | |
| Title | Form-Winding Armature Coils |
| Author | J.W.Cooper |
| Notes | Complete coil on form showing ties, showing connections to commutator and dummy section, felt pad and cramps, coil pulled to shape, in position, appearance during assembly, simple loop coils, near completion, finished, with "Lock" winding |