Robert E. Scofield, 67, a retired investigator with the Internal Revenue Service and a longtime member of Alcoholics Anonymous, died of cancer Jan. 23 at the Potomac Valley Nursing Home.

At his death, Mr. Scofield had almost 32 years of continuous sobriety in AA. He devoted most of his time to the organization and he was widely recognized among members as having a special gift for helping others to achieve sobriety.

Until his illness, Mr. Scofield usually could be found at the Del Ray Club, a private organization in Bethesda where about 30 AA meetings are held each week. But he also attended AA gatherings throughout the Washington area. Some were in hospitals and prisons and others were in churches and other conventional settings. He was a regular member of several AA groups in northwest Washington and Montgomery County.

Mr. Scofield went almost everywhere on foot and he was known by the nickname "Walkin' Bob." A square-featured, cheerful and unassuming man, he was once described by a colleague in AA as looking like "a bishop on holiday."

A resident of Bethesda, Mr. Scofield was born in Buffalo. He served in the Army in New Guinea during World War II. He moved to Washington after the war and began his career at the IRS. He graduated from Benjamin Franklin University. He had 30 years of federal service when he retired in 1975.

Mr. Scofield was a recipient of the Treasury Department's Albert Gallatin Award.

Survivors include one brother, Harold J. Scofield of Buffalo.

WILLIAM C. DUDDING, 73, a retired Army major who became chief of a logistic support section in the Army Department, died of a stroke Jan. 27 at the Dewitt Army Hospital at Fort Belvoir. He lived in Alexandria.

Mr. Dudding was born in New Castle, Va. During World War II, he served in the Army in Europe. He later was stationed in Japan. After serving in the Korean war, he had an assignment at the U.S. Military Academy at West Point, N.Y. He retired in 1960.

He moved to the Washington area in 1965 and went to work for the Army Department. He retired in 1983.

Mr. Dudding was a member of Retired Officers Association, the Bush Hill United Presbyterian Church in Alexandria, and the Bass Anglers Society of America.

Survivors include his wife, Jenevee Dudding of Alexandria; two sons, Edward Dudding of Spring Lake, N.C., and William Dudding of Alexandria; one brother, Lester E. Dudding of Covington, Va., and three grandchildren.

WILLIAM H. MOORE SR., 84, a retired engineer who worked 34 years for the federal government here, died Jan. 24 at a nursing home in Newport News. He had Parkinson's disease.

Mr. Moore was born on a farm near McAlisterville, Pa., and he graduated from Pennsylvania State University.

He moved to the Washington area in 1934 and took a job as a clerk with the Farm Credit Administration. Later he worked for the Railroad Retirement Board.

During World War II, Mr. Moore was a civilian Army ordnance engineer at the Pentagon. After the war, he was a contract engineer with the Navy Department's Bureau of Ships until he retired in 1968.

He was a vice president and treasurer of the George Mason chapter of the Sons of the American Revolution.

A former Arlington resident, Mr. Moore had been in the nursing home for six years.

His first wife, the former Anstis Davis, died in 1951.

Survivors include his wife, Mary A. Moore of Arlington; one son by his first marriage, Bill Moore of Upper Marlboro; one stepson, Charles Parker of Charlotte, N.C., and two grandchildren.

MARY HEINEMAN KOBRE, 64, a statistician for the Bureau of Reclamation in the Interior Department who retired in 1984 with more than 40 years of federal service, died of cancer Jan. 27 at George Washington University Hospital.

Mrs. Kobre, a resident of Silver Spring, was born in Washington and she graduated from the old Central High School. In the late 1930s she worked briefly as a bookkeeper for the W&J Sloane furniture company. Early in World War II she worked for the Army Signal Corps. She then joined the Bureau of Reclamation.

Survivors include her husband, Max Kobre, and one sister, Thelma Barmack, both of Silver Spring.