
UP Challenger 4-6-6-4 by Overland, HO Scale — BCHIN LOCOMOTIVES,

6985 UP Challenger 4-6-6-4, #3977, Museum Version, Two-tone,

4-6-6-4 Steam Engine UP Challenger #3977 at the Randall,

Union Pacific LEGACY LionMaster Challenger 4-6-6-4 Steam,

Union Pacific 4-6-6-4 ,

UP Challenger 4-6-6-4 by Overland, HO Scale — BCHIN LOCOMOTIVES,

Union Pacific Heavy Challenger | Locomotive Wiki | Fandom,

Northern Pacific classes Z-6 to Z-8 The first Challenger,

Northern Pacific classes Z-6 to Z-8 The first Challenger,

4-8-8-4 - Wikipedia