| Year | 1925 |
| Date | 03-Dec |
| Volume | 53 |
| Issue | 1,284 |
| Page | 711 |
| Category | Domestic Engineering |
| Part | |
| Title | Practical Private Telephone Installations at Low Cost |
| Author | B.Clements Henry |
| Notes | Cost of sundry parts, receiver and transmitter, adjusting the diaphragms, the granule charge, finishing touches: line-connection of the stations |