Ann S. Pherson, 80, a volunteer and community worker in the Springfield-Franconia area of Fairfax County for 27 years, died of chronic obstructive pulmonary disease June 17 at the home of her son in Great Falls.

Mrs. Pherson, who lived in Springfield, was born in Perham, Minn., and attended Moorhead Business School in Minnesota.

She moved to Washington during World War II, and in 1943, she married John R. Pherson, who later worked for the Central Intelligence Agency. From 1968 to 1971, they lived in Cyprus. He died in 1994.

In 1971, Mrs. Pherson began doing volunteer work for the Koinonia Foundation, a church-affiliated organization that assists needy people in the Springfield and Franconia area.

For about 10 years before she retired in 1998, she was the executive director of the foundation.

In 1996, at a ceremony honoring Mrs. Pherson for 25 years of service to Koinonia, Fairfax County Supervisor T. Dana Kauffman wrote that Mrs. Pherson was "known for her `can-do' attitude."

Mrs. Pherson was a founding member in 1955 of St. John's Lutheran Church in Franconia.

Survivors include two children, Lynne M. Pherson of Derwood and Randolph H. Pherson of Great Falls; two sisters, Lorraine Callaway of Fort Washington and Verna Krueger of Perham, Minn.; two brothers, Louis and Fred Sieling of Perham; and two grandchildren.