| Year | 1926 |
| Date | 09-Sep |
| Volume | 55 |
| Issue | 1,322 |
| Page | 247 |
| Category | Domestic Engineering |
| Part | |
| Title | Practical Private telephone Installations at Small Cost |
| Author | B.Clements Henry |
| Notes | Connections, "overhearing" troubles, special connections, fitting "jacks", a complete installation, operation, wall block "R", operation of central's apparatus, an original device |