![Center cab diesel switcher with cars along passenger platforms](https://www.trains.com/wp-content/uploads/2021/08/20210824.jpg)
SPUD switcher
St. Paul Union Depot 44-ton 441, built by GE in 1941, works its namesake Minnesota passenger terminal. The locomotive’s size and weight would allow one-man operation under the “90,000-pound” rule of the 1937 National Diesel Agreement labor rules. Classic Trains collection