John H. (Jack) Cooke, 54, a sales executive with Judd & Detweiler, Inc. and active as a volunteer fireman in Prince George's Country, died Tuesday at the Washington Hosptial Center after heart surgery.

He had been in the sales office of the printing firm for 19 years. Prior to that he had been a pressman on four-color presses used by the firm for National Geographic work for 17 years.

During that period, Mr. Cooke had served three years in World War 11 with the U.S. Navy.

Born in Washington, he was a graduate of McKinley Tech night school.

He was a life-member of the Chilment, joining that organization when it was chartered in 1950 and serving as its chief in 1957.

He also was a life-member of the Prince George's County Firemen's Association, the Prince George's Rescue Squard Association and the Maryland State Firemen's Association.

Mr. Cooke had taken courses in fire control and prevention at the University of Maryland and later was an instructor with the university's Fire Extension Service.

He had been active in the DeMolay and the Boy Scotts, serving as an assistant scoutmaster.

He is survived by his wife, Cladys M. Cooke, and his mother, Bertha Cooke Proctor, both of the home in Largo: a son, Charles Harvey Cooke, of Hyattsville; a daughter, Jacquelyn Hoyer, of Elliot City; a sister, Viola Stith, of Hyattsville, and two grandchildren.