| | Manufacturer | Part No | Description | Available | Price |
| Buy | Electronic Instrument Co | | 488: E;ectronic Switch Instruction Manual. 1954. (108697) | 1 | $15.00 |
| Buy | Electronic Instrument Co | | 232-249: Peak-to-Peak VTVM Instruction Manual. 1954. (108698) | 1 | $15.00 |
| Buy | Electronic Instrument Co | | 232: Peak to Peak VTVM Construction Manual. 1954. (108699) | 1 | $15.00 |
| Buy | Electronic Instrument Co | | 488: Electronic Switch COnstruction Manual. 1954. (108700) | 1 | $15.00 |