Revell Big Boy Locomotive
The American Big Boys are some of the longest and largest steam locomotives ever built anywhere in the world, capable of hauling a 3,600 ton train. The 25 Big Boy locomotives were built in 2 groups. The first group, called the Class 1, was built from 1941. The second, Class 2, was built in 1944. Most Big Boys were retired from service in 1961.