| Early vertical spool Dolbeer donkey in Camp 18 about 50 miles west of Portland/OR |
| Detail of Dolbeer |
| Vertical spool |
| Sheave |
| Willamette donkey in Camp 18 |
| Steam engine/gears of Willamette |
| Builders plate |
| Same donkey from the opposite side |
| Smaller Willamette |
| Cylinder/Boiler details |
| Tacoma donkey in Tillamook |
| Details of Tillamook donkey |
| Builder's plate |