Author, historian and Georgetown University associate professor Chandra Manning will be the guest speaker at the Civil War Round Table of the District of Columbia on June 11, lecturing on “Civil War Contraband Camps, Emancipation and the Reinvention of the American People.”

  Manning is the author of the well-received 2007 book “When This Cruel War is Over: Soldiers, Slavery and the Civil War,” in which she persuasively argues that slavery was the root of the Civil War based on extensive research of what the soldiers had to say in their diaries, letters and regimental newspapers. She included hundreds of first-person accounts written at the time rather than trust postwar memoirs.

  Reservation for the $30 dinner held at Ft. McNair Officer’s Club must be made by June 3. A cash bar opens at 6 p.m., dinner is scheduled for 7 p.m., and the lecture is at 8 p.m. The fee for the lecture only is $5.