Dr. Jack Edward White, a retired surgery professor, oncology department chairman and cancer research center director at Howard University who was an authority on cancer among blacks, died of cancer July 2 at his home in Washington. He was 66.

Dr. White had directed numerous research projects and had written extensively on general surgery, cancer surgery and special characteristics of cancerous diseases among blacks. He served as a mentor to other black physicians who came to specialize in cancer research or cancer surgery.

He also had been an adviser to cancer programs in Cuba, Haiti and Ethiopia, and had served on the oncologic drug advisory panel of the Food and Drug Administration. Since retiring from Howard in 1986, he had been an adviser on cancer to the District government.

Dr. White had served as a vice president of the Medico-Chirurgical Society of the District of Columbia and had been a member of the board of the D.C. division of the American Cancer Society. He had been president of the Southeastern Cancer Research Association and a vice president of the James Ewing Society. He was a founding member of the American Society of Preventive Oncology.

He was one of the first blacks to become a diplomate of the American College of Surgeons and to serve on the staff of the Washington Hospital Center. He was a member of the Alpha Omega Alpha medical honor society.

Dr. White was a native of Stuart, Fla., and an Army veteran of World War II. He was a 1941 graduate of Florida A&M University and received his medical degree from Howard University in 1944. He served an internship and residency at the Freedmen's Hospital in Washington and did a surgical residency at Memorial Hospital in New York.

He joined the Howard faculty in 1951 as an assistant professor of surgery. He was promoted to associate professor in 1958 and full professor in 1963. He also had served as director of the university's cancer clinic and its cancer teaching project. From 1974 to 1986, he was oncology department chairman.

Dr. White was the recipient of an alumni award for research excellence from Florida A&M. He was presented with the Howard medical school student council's faculty award in 1955 and 1965. In March, he was presented with Howard University's Distinguished Alumni Achievement Award for his work in education, surgery and cancer research. Since 1983, an annual oncology lecture program has been presented in his honor by the university.

Survivors include his wife of 42 years, Sara, of Washington; two sons, Jack Jr., of New York City, and David Anthony White of Washington; three daughters, Sara Lorraine White of Louisville, and Carole Diann White and Marilyn Marie White, both of Washington, and five grandchildren.

LEON J. BERCOVITZ

Patent Office Official

Leon J. Bercovitz, 75, a lawyer and pharmacist by training who was a retired patent examiner and division chief with the U.S. Patent and Trademark Office, died June 28 at the Washington Hospital Center after a stroke. He had a heart ailment.

He spent 27 years with the Patent Office before retiring in 1973. His awards from the office included two certificates of commendation and a Bronze Medal. He was a member of the Patent Office speakers bureau and the Patent Office Society.

Mr. Bercovitz, an area resident since 1935 who lived in Silver Spring, was a native of Baltimore. He received pharmacy degrees from the University of Maryland and George Washington University and a law degree from American University.

From 1940 to 1943, he had owned and operated the Foxhall Pharmacy on Foxhall Road NW. He then served in the Navy during the remainder of World War II.

Mr. Bercovitz had served as treasurer of the Great Yiddish Culture Festival in Washington and as financial secretary of the Workmen's Circle of the National Capital Area. He also had served on the board of the Workmen's Circle Home for the Eastern Zone in Media, Pa.

Survivors include his wife, the former Alice Winik, whom he married in 1936 and who lives in Silver Spring; a son, Charles Stanley Bercovitz of Arlington; a daughter, Barbara Ann Richtmyer of Miami; three sisters, Evelyn Orman of Shady Side, Md., Charlotte Waxman of Wilmington, Del., and Beverly Wiseman of Baltimore, and a grandchild.

ALFRED R. ALLEN

Administrator of Arts Organizations

Alfred Reginald Allen, 83, an area resident since 1982 who had been an administrative official with cultural organizations in New York and Philadelphia, died July 3 at his home in Washington after a heart attack.

Mr. Allen was a native of Philadelphia and a 1926 graduate of Harvard University. He served with the Navy in the Pacific during World War II.

During the 1920s, he had worked in the record business in New York. During the 1930s, he was an advertising copywriter in New York and Philadelphia. He later became manager of the Philadelphia Orchestra. He also had worked for Universal Pictures in Hollywood.

He was a member of the administrative staff of the New York Opera from 1949 to 1958, then spent five years as executive operations director of Lincoln Center in New York. He then returned to the Opera administrative staff, where he worked until retiring in 1969.

Mr. Allen was an authority on the works on the British light opera figures Gilbert and Sullivan and had written on the duo. He also had been an executive vice president of the American Academy in Rome and had served on a presidential commission for a national cultural center.

His wife, the former Helen Howe, whom he married in 1946, died in 1975. He leaves no immediate survivors.