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 steam powered tractors and engines used primarily for agriculture purposes in the early 1900's Photograph: © John Stewart Click for a larger image and more information Keywords associated with this stock photo: Springfield Missouri, Missouri, Ozarks, festival, steam, steam power, antique, tractor