Mary Dyer Chase Campbell, 81, a retired mathematics teacher, died Sunday at a Dallas hospital after a heart attack.
Mrs. Campbell, who lived in Arlington for 34 years, taught mathematics at Washington-Lee High School there for about 20 years before retiring in 1963.
She was born in Hardy, Ark., and earned a bachelor's degree in mathematics from Randolph-Macon Woman's College in Lynchburg, Va., in 1919.
She was the widow of Adrian Brooks Campbell, a government lawyer, who died in 1957.
Mrs. Campbell was a member of the Clarendon United Methodist Church for 33 years and taught the Fidelis class there for 11 years.
She was a past president of D.C. Chapter F of the P.E.O. Sisterhood and a member of the Ashton Heights Women's Club and the Arlington Retired Teachers Association.
Before moving to Dallas in February, Mrs. Campbell lived in Falls Church for three years.
Survivors include three sons, James A., of the home in Dallas, John B., of Midland, Tex., and Thomas C., of Cincinnati; a daughter, Carolyn Vance, of Edmond, Okla; a sister, Katherine Chase Wallace, of Eden Prairie, Minn.; a brother, Dean A. Chase, of Midland; 13 grandchildren and seven great-grandchildren.
The family suggests that expressions of sympathy be in the form of contributions to the Mary Dyer Campbell Campership Fund at the Clarendon United Methodist Church in Arlington or to the Heart Fund.