The Disappearing Friend Mystery (The Boxcar Children Mysteries Book 30)
| Country | USA |
| Brand | Stephen Joseph |
| Manufacturer | Stephen Joseph |
| Binding | Kitchen |
| Model | SJ950190B |
| Color | Girl Turtle |
| UnitCount | 1 |
| UPCs | 794866002017 |
| EANs | 0794866002017 |
| ReleaseDate | 0000-00-00 |