Retired Army Col. Josiah Gay Seabourne, 82, a veteran of both World Wars and a former president of the Civil War Round Table of the District of Columbia, died Thursday at Walter Reed Hospital following a heart attack.

He had lived in the Washington area since the late 1940s. He was president of the Civil War Round Table in 1958. For many years he was a guide and narrator for the field trips conducted by the organization to Civil War battlefields located near Washington.

Col. Seabourne also was a member of the District Columbia Civil War Centennial Commission in the 1960s, the American Revolution Round Table, D.C. and the Columbia Historical Society.

He was born is Newlin, Pa., and grew up in Philadelphia where he worked as a secretary on a newspaper before enlisting in the Army Signal Corps in the early part of 1917.

He served in France in World War I and remained in the Signal Reserve Corps after the war. He lived in New York City, where he was correspondece secretary to financier bernard M. Baruch for several years. He also was president of a consumer finance company, which he organized.

Col. Seabourne was called back to active duty in World War II. He served in Europe as a wing signal officer with the Army Air Corps and chief of the communications unit training branch of the plans and training section at headquarters of the Army Air Forces.

After the war ended, he spent a year in Germany reporting on the operations of the German Air Force Signal Intelligence Service.

Col. Seabourne was well-known to area duplicate bridge clubs and helped establish the North Virginia Bridge Association, a unit of the American Contract Bridge League.

He is survived by his wife, Norma, P., of the home in Silver Spring, and a brother, Harper G., of Allentown, Pa.