| Year | 1936 |
| Date | 23-Apr |
| Volume | 74 |
| Issue | 1,824 |
| Page | 395 |
| Category | Electrical |
| Part | |
| Title | Electromagnetic Devices. With notes on the design of magnets for the model maker and inventor |
| Author | A.H.Avery |
| Notes | The first magnet, natural magnets, earliest electromagnet, modern progress, magnet steel alloys, suitability, possibilities, freak magnets, classification, magnetic laws, permeability, flux density |