A postcard of one of the streamlined Hiawatha trains. This one is headed by one of the 4-4-2 arrangement “Atlantic” type engines; pictured here is Engine No. 2, of the four Atlantic engines, originally introduced in the 1930s. They would be partially supplanted by the 4-6-4 arrangement “Pacific” engines introduced in the 1940s, but both types of the steam engines would continue running until the 1950s, when the trains were switched to being pulled by diesel engines instead.
The Atlantic and Pacific style engines were some of the fastest steam trains in the world, able to make the run between Chicago, Illinois, and St. Paul, Minnesota, in 6 1/4 hours, and always - and easily - sped along at speeds in excess of 100 miles per hour (160 km per hr.).
The Milwaukee Road was the train company that owned and ran the Hiawatha express passenger trains.