Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Locomotive Bed – Cylinder Portion – Rear Unit (3,4,5)
		SKU/Drawing Number: GSC B-53181
			| Wheel Arrangement: | 4-6-6-4 | 
| Scale to 1 ft.: | 2” | 
| DWG. Size (in): | 30x87 | 
| Drawing Title: | Locomotive Bed – Cylinder Portion – Rear Unit (3,4,5) |