Great Northern Railway freight train west of Havre, Montana in 1968. The train consists of boxcars, many of them empty, from a variety of railroads. At the time, two of the northwest's principle commodities, grain and lumber, were typically shipped in boxcars. Today, more specialized covered hoppers and center-beam flatcars have largely supplanted the once-ubiquitous boxcars. The Great Northern Railway was a predecessor of today's BNSF, which now operates this line. On either side of the train are two Montana icons: the wheat field at bottom, and a vast, dramatic sky above.