Obituaries

His first wife, Manon Harder Holser, died in 1960. His marriage to Iola Holser ended in divorce.

Survivors include his wife of 35 years, Annetta Tenchini Holser of Towson; three children from his first marriage, Anita Holser of San Jose, Calif., Sigrid Holser of Baltimore and Malcolm Holser of Merced, Calif.; six stepchildren, Camile Holser of Oakland, Calif., Douglas Holser of Los Angeles, Reese Holser of San Jose, Annetta Hanna of Maplewood, N.J., Juliet Komisarcik of Bristol, Va., and Laura Guggenheim of New York; and 10 grandchildren.

-- Patricia Sullivan

Arlo D. AndersonMathematician

Arlo D. Anderson, 82, a mathematician at the Naval Research Laboratory, died Aug. 11 at Fort Washington Hospital of heart arrhythmia and renal disease.

Mr. Anderson worked on the nuclear weapons program, including the first hydrogen bomb detonation and the study of the electromagnetic pulse, a phenomenon related to air burst nuclear explosions. He retired in 1973.

He was born in Amboy, Ill., and grew up in West Branch, Iowa. He served as a bombardier and navigator in the Army Air Forces in the United States during World War II. After the war, he graduated from the University of Oregon, where he also received his master's degree in mathematics in 1949.

An early resident of the Moyoane Reserve in Accokeek, he served as president of the local association and worked for the scenic easement that preserved the view of the Potomac River as seen from George Washington's Mount Vernon home.

Survivors include his wife of 56 years, Betty Anderson of Accokeek; a son, Clifford Anderson of Accokeek; and a brother.

-- Patricia Sullivan