The Mapleton Foundry, located in Mapleton, Illinois, is one of the largest in the United States and provides the cast iron blocks used in Caterpillar equipment engines. This is a goldenrod yellow cap with black accents, including the three black stripes across each side. The embroidered patch on the front of the hat reads 'World Class Leader - Mapleton Plant - Quality & Foundry Technology." The style of this cap dates it to the 1980s. It's in excellent vintage condition, no issues.