Indian Corn I. Posterized finish. Macro. Flint corn or Indian corn is one of the oldest varieties of corn, from the Native American who taught the process to the early colonists. A symbol of the harvest season, flint corn - hard shells - can be found as centerpieces and decor at Halloween and Thanksgiving. Click on the image or link to purchase a poster, print, acrylic print or canvas print. In addition, there are home decor and gift items. All with a 30-day money back guarantee.