The AtlasO Premier 3-rail O Scale Thrall 55' All-Door Boxcar is based on popular cars which offered easy loading and unloading from the 1960s to the early 2000s. From the dawn of railroading, the boxcar was the vehicle of choice for transporting solid goods that needed protection from the elements. And one of the biggest bottlenecks in shipping was getting the cargo in and out of a boxcar's doors. Over the years, doors grew wider to speed things up, and other expedients were tried - like end doors on automobile cars and small lumber doors on the ends of Milwaukee Road rib-side boxcars. Perhaps the ultimate solution was this all-door boxcar, where the entire side consisted of four sliding doors that could be opened in pairs to provide a 25'wide doorway. The idea for these cars was sketched on a napkin in 1962 by Flake Willis, president of the McCloud River Railroad. A California logging and lumber carrier, the McCloud was looking for a lumber-carrying vehicle with the protection of a bo
