| Year | 1952 |
| Date | 29-May |
| Volume | 106 |
| Issue | 2,662 |
| Page | 697 |
| Category | Electronic |
| Part | |
| Title | A Portable Tape Recorder |
| Author | Raymond F.Stock |
| Notes | With Notes on Magnetic Recording. Deck mechanism and controls, complete wiring diagram, the amplifier, circuit of amplifier chassis, interior of recorder |