File:GuibersonDiesel NASM-NASM-9A13697.jpg

View of Guiberson T-1400 tank engine on stand, Dallas, Texas, 1941. Fred A. Thaheld (left) and Samuel Allen Guiberson, III (right) are posed along side. From https://airandspace.si.edu/collection-objects/propulsion-engines-guiberson-diesel-general-thaheld-fred-photograph