William H. Glascock, 59, former supervisor of the reproduction and photographic section of the Johns Hopkins University Applied Physics Laboratory, died of cancer Sunday at the Washington Adventist Hospital.

He had joined the laboratory shortly after serving with the U.S. Navy in World War II, when he was chief of the photographic branch in the office of Adm. Chester W. Nimitz, commander-in-chief of the Pacific Fleet.

Mr. Glascock and his 35 assistants covered the Pacific theater during the war, getting pictures for documentation, news releases and historical records. Many of the pictures are in history and school textbooks.

At the Applied Physics Laboratory, Mr. Glascock had been in charge of documenting research efforts of scientists and engineers there.When the laboratory staff began its program in the late 1950s to develop the Navy satellite navigation system, he and his staff recorded all of the work in physics, electronics and general technology. He had been on disability leave since last December.

He was born in Washington and graduated from Central High School.

Mr. Glascock raised race horses and was active in the Goshen Hunt in Maryland.

He was a member of the Silver Spring Masonic Lodge and the Society of Photographic Scientists and Engineers.

He is survived by his wife, the former Ann Hall, of the home in Silver Spring; two daughters, Billie Lynn Hall, of Beltsville, and JoJo Early Montgomery, of Laurel, and two grandchildren.