From Johnny Appleseed to railroad engineer Casey Jones to steel-driver John Henry, America has its share of folk heroes. Some of these larger-than-life characters really existed. Some were created. All of them have played a colorful role in American life and history. Daytona Beach resident and author William Lazarus will discuss their exploits and the origins of their legends at 2 p.m. Saturday, Aug. 19, at DeBary Hall Historic Site, 198 Sunrise Blvd., DeBary.