Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Boxes – Driving Arrangement (5)
		SKU/Drawing Number: #163-CA-32183 C
			| Wheel Arrangement: | 4-6-6-4 | 
| Scale to 1 ft.: | 3” | 
| Drawing Title: | Boxes – Driving Arrangement (5) | 
| DWG. Size (in): | 30x21 |