A collection of Missouri-Kansas-Texas (M-K-T or KATY) Railroad operating papers, equipment records, promotional materials, photographs and slides, publications, and newspaper clippings concerning the company. The collection also contains similar but less extensive materials of other American and foreign railroads, American railroad industry publications, and railroad enthusiast periodicals. The collection reflects the compiler's interest in American railroads in general with a focus on the Missouri-Kansas-Texas Railroad; consequently the two predominant series of the collection are the Missouri-Kansas-Texas Railroad and American Railroads. The latter series contains more limited amounts of material on railroads throughout the United States. A small series, Foreign Railroads, contains limited materials on Canadian and European lines.