Members Only. Gary Argabright, local archaeological expert and historian, will meet with members only before the lecture at 11:00 a.m. for an informal conversation about his 40 years of surface collecting prehistoric artifacts. He will also set up a display of artifacts from some of his collection sites to give members an idea of what kinds of artifacts have been revealed in local plowed farm fields over the years. Coffee and morning refreshments will be served. To be held at the Hopewell Culture NHP Mound City Group Visitor Center