3D image of the top surface of the Wilmington Tablet, created from a cast of the original sandstone artifact at the University of North Carolina. The original tablet resides at the Ohio Historical Society. This tablet was recovered from the Sparks mound (400 BC-AD 1), Clinton County, Ohio, and is associated with the Early Woodland Adena culture of the midwestern United States. It measures 122 mm x 97 mm x 17 mm. Courtesy of the Research Laboratories of Archaeology, University of North Carolina, Chapel Hill.