Side A: Archaeologists believe that this prehistoric mound, part of a complex of earthworks, was used for rituals by the Hopewell people and was probably built between 100 BC and 400 AD. Note the painted post tops marking the Hopewell pole house footprint. The mound is recorded on the National Register of Historic Places and was given to the Worthington Historical Society in 1974 in memory of Herman Plesenton Jeffers.