| Year | 1924 |
| Date | 30-Oct |
| Volume | 51 |
| Issue | 1,227 |
| Page | 483 |
| Category | Electrical |
| Part | |
| Title | Telephones for General Use |
| Author | |
| Notes | Some Points in their Construction and what to look for when experimenting with them. Pair of "Ediswan" headphones, an "Ediswan" filament rheostat, construction of receivers, Dewar switch, some other "Ediswan" accessories |