| The British Vintage Wireless Society |
| Scans from Electronics Australia |
| Wireless World (American Radio History) |
| The Radio Society of Great Britain |
| The Royal Navy Amateur Radio Society |
| The Vintage Military Amateur Radio Society |
| Radio Museum Org |
| The London Light Music website |
| Bush Radio |
| Cossor Radio |
| Dynatron Museum |
| Kolster Brandes Museum |
| Murphy Radio |
| Radio Gramophone Development |
| Golborne Vintage Radio forum |
| UK Vintage Radio forum |
| National Valve Museum |
| Vintage radio world |
| Les Franklin's site on Gilbert Davey |
| The Emitron Camera |
| Pre-War Television |