| Year | 1917 |
| Date | 13-Dec |
| Volume | 37 |
| Issue | 868 |
| Page | 365 |
| Category | Electrical |
| Part | 1 |
| Title | Home-made Telephones |
| Author | A.P.Cooper |
| Notes | Introduction, general view, requirements, construction, 1 - a desk telephone, 2 - a wall telephone, wall 'phone opened to show bell switch, hook, etc., switch hook, connections, further connections, diagram of connections for desk telephone |