20-30145-1 UNION PACIFIC BIG BOY AS-BUILT WITH COAL TENDER #4014-O QuickBooks Rocks range in size from

Rocks range in size from smallest: 1 1/4" L x 3/4" W x 1/4 H to largest: 3 3/8" L x 1 3/4" W x 1/2" H

Highly detailed one-piece body simulates double-sheathed construction

8 inch clearance

Molded in white and clear

20-30145-1 UNION PACIFIC BIG BOY AS-BUILT WITH COAL TENDER #4014-O QuickBooks Rocks range in size fromJust 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 &