Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Guides – Front Engine (3,4,5)
SKU/Drawing Number: 503-CA-29983
| Wheel Arrangement: | 4-6-6-4 |
| Scale to 1 ft.: | 3” |
| DWG. Size (in): | 30x21 |
| Drawing Title: | Guides – Front Engine (3,4,5) |