John Keller will speak on the "Formation of the Confederacy" at 3 p.m. Sept. 18 at the Coastal Discovery Museum.
Keller will bring his collection of 21 flags flown by various groups during the Civil War, address the origins of the Confederacy, and trace the history of the many flags used by military regiments, state and local governments, and the Confederacy.
The program is sponsored in part by the Kroger Foundation and costs $7 per person for ages 12 and older. Reservations are required by calling the museum at 843-689-6767, extension 223, or going to coastaldiscovery.org.
The museum is at 70 Honey Horn Drive on Hilton Head Island.