| The first internal-combustion rolling stock on UP was a series of self-propelled McKeen passenger cars, powered by small gasoline and distillate-fueled engines. These motor cars were designed by UP's superintendent of motive power and machinery, William McKeen, and were built beginning in 1905 by UP in the railroad's Omaha, Neb., shops. In 1908, UP organized the McKeen Motor Car Co. as a subsidiary to sell McKeen cars to other railroads. Here the conductor and engineer for #19 are posing outside the unit. |