30-1921-1 UNION PACIFIC BIG BOY #4005 W/ COAL TENDER-O QuickBooks • Molded in Color (9-Total

• Molded in Color (9-Total Parts)

In the space of just 2 years

The kit features welding tank

This 10" Fastrack Terminal Straight Track features wires pre-attached to the track

the smoke exhaust outlet relocated to the center of the turret

30-1921-1 UNION PACIFIC BIG BOY #4005 W/ COAL TENDER-O QuickBooks • Molded in Color (9-TotalJust 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 &