30-1923-1 UNION PACIFIC DRG&W HERITAGE BIG BOY #1989 W/ COAL TENDER-O QuickBooks Modular design allows easy expansion

Modular design allows easy expansion with additional kits

Compatible with Athearn

EMD gave the MP15 a longer frame than its predecessor

• Clear red taillights

F19 Rev Up

30-1923-1 UNION PACIFIC DRG&W HERITAGE BIG BOY #1989 W/ COAL TENDER-O QuickBooks Modular design allows easy expansionJust months before Pearl Harbor, the American Locomotive Company delivered the first Big Boy to the Union Pacific Railroad. The UP's Department of Research and Mechanical Standards had designed the locomotive for a specific task: to pull a 3600 ton train unassisted over the Wasatch Mountains in Utah. While the Big Boy is often cited as the biggest steam locomotive ever built, in fact it is not. The Norfolk & Western's Y6 and A, the Duluth Missabe &