Hi Terry - ModelMaster was a small family business operated by my dad, Ralph Ackerman, who was a world-class model maker himself. I remember accompanying down to the yards in Cedar Rapids, where he would photograph the cars, leading to scale drawings. All components of the ModelMaster kits were made within a ten-mile drive from home. In addition to the rolling stock, ModelMaster sold both O and HO gauge spikes. Every now and then an unused box will show up for sale online.