Sierra Club Wilderness Calendar 2020
| Country | USA |
| Brand | Sierra Club Books |
| Manufacturer | Sierra Club |
| Binding | Calendar |
| ItemPartNumber | 9781578052240 |
| Model | 9781578052240 |
| ReleaseDate | 2019-07-23 |
| UnitCount | 1 |
| Format | Engagement Calendar |
| UPCs | 602593262393 |
| EANs | 9781578052240 |