
N 4-6-6-4 with DCC & Sound, UP #3976 Model Train | Athearn,

8653 UP Challenger 4-6-6-4, #3714, Black & Graphite, Oil,

4-6-6-4 - Wikipedia,

Steam locomotive profile: 4-6-6-4 Challenger | Classic,

Train Simulator | 4-6-6-4 ,

Athearn G97223 HO UP Challenger 4-6-6-4 Steam Locomotive w,

MTH 20-3278-1 O Gauge Great Northern 4-6-6-4 Z-6 Challenger,

HO 4-6-6-4 Challenger w/Paragon4 DCC Sound & Smoke, Union,

Locomotive profile: 4-6-6-4 Challenger type steam locomotive,

Late 4-6-6-4 Challenger Drawings. Due to the age of the,

Union Pacific 4-6-6-4 “Challenger” 3985. From Mark I Video,

Steam locomotive profile: 4-6-6-4 Challenger | Classic,

Union Pacific 4-6-6-4 ,

Union Pacific 4-6-6-4 ,

HO 4-6-6-4 Challenger w/Paragon4 DCC Sound & Smoke, Union