EDINBURG — The Museum of South Texas History welcomes Lawrence Eugene Fernandez as a guest speaker during the Sunday Speaker Series presentation, “Jackass Flats: Tales of the Deltaland of the Rio Grande,” at 2 p.m. Sunday, July 10.Fernandez will discuss why it was important to preserve the stories about regional families and historical events. His independently published book is a collection of Rio Grande Valley wordof-mouth historical accounts as told by family members, friends and community leaders. Those tales would have been lost on back porches, where most stories are recited to family and friends, but are now preserved through ...