Saturday, March 9, 1 p.m. at Winterville Mounds. Speaker Series 2013. Arkansas survey archaeologist at Toltec Mounds Elizabeth Horton will speak on archaeological evidence for basketry and fabric during the pre-Mississippian and Mississippian periods. In addition to other recent organic discoveries, she will touch on evidence of pre-European cotton in the Arkansas River Valley. Light refreshments will be served. For more information call 662-334-4684 or email Winterville Mounds.