Stock photography, photos: Antique Steam Powered Tractor Stock photos of The annual Ozarks Steam Engine Festival (Steam-O-Rama) in Springfield, Missouri sports a variety of antique steam engines used for agricultural purposes such as this tractor Photograph: © John Stewart Click for a larger image and more information Keywords associated with this stock photo: Springfield Missouri, festival, Ozarks, Steam Power, steam, steam engine, antique tractor, Missouri,