MTH Premier 20-3807-1 O Scale 4-8-8-4 Big Boy Steam Loco Union Pacific UP 4014 Buffalo & Pittsburgh carrying the bulk of the

carrying the bulk of the weight down low for improved stability

Series SP 9500-9502

With no tiny clips to force into place

Follow the included instructions or a UGears online tutorial to press each piece into place

MTH Premier 20-3807-1 O Scale 4-8-8-4 Big Boy Steam Loco Union Pacific UP 4014 Buffalo & Pittsburgh carrying the bulk of theMTH Premier 20 3807 1 O Scale 4 8 8 4 Big Boy Steam Loco Union Pacific UP 4014 Just 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