“Researching Your Family Tree Using DNA” is the topic for the Madison County Historical Society’s August Speaker Series program. The presenter, Debi Burgess, working through the DNA Detectives Facebook page, has assisted hundreds of families with finding their birth relatives. The program will be held at 2 p.m. on Sunday, August 7 in the lower level of Immanuel United Methodist Church at 800 N. Main St., Edwardsville, directly across the street from the MCHS Library.