| Year | 1906 |
| Date | 27-Sep |
| Volume | 15 |
| Issue | 283 |
| Page | 294 |
| Category | Electronic |
| Part | 11 |
| Title | Induction Coils for X-Ray and Other Purposes |
| Author | John Pike |
| Notes | The Operation of Winding Double Sections. Connections for testing sections, another testing method, finished double section, extended diagram of coil sections |