Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Wheels – Intermediate Driving Wheel – Front & Back Engine (3,4,5)
		SKU/Drawing Number: 954-CA-29838
			| Wheel Arrangement: | 4-6-6-4 | 
| Scale to 1 ft.: | 3” | 
| DWG. Size (in): | 30x43 | 
| Drawing Title: | Wheels – Intermediate Driving Wheel – Front & Back Engine (3,4,5) |