That's a pretty impressive looking photo, but a couple of years ago we visited the Lake Superior Railroad Museum, in Duluth, and saw the Mallet No. 227 that used to haul iron ore to Duluth and Twin Harbors. It's an articulated, 4-8-8-4 locomotive, similar to the Big Boy type built for Union Pacific. It's over 120' long and they have it set up so that every so often you can see how all of the component parts of the driving wheels worked together in harmony. It is truly a marvel of engineering.

The guy second from left is wearing the very functional Stormy Kromer hat. Still being made since 1903.

Engine 3014, Class H 4-8-4, was built by Baldwin in September 1929 (Manufacturer's #61066). It was rebuilt on February 11, 1948, as Class H-1 and retired on May 13, 1953.