Mildred Fleming Councilor, 96, who operated a nursery school and was a volunteer for dozens of organizations, died of cardiopulmonary arrest Aug. 28 at her daughter's home in Alexandria.

Mrs. Councilor was born in Winston-Salem, N.C., and graduated from Salem College there. She did graduate studies at Vassar College in Poughkeepsie, N.Y., Boston College and George Washington University.

She had lived in Alexandria since 1931, when she was married. From the late 1930s to mid-1940s, she ran a private nursery school there.

For much of her life, Mrs. Councilor served on numerous committees for civic, social and educational organizations. During World War II, she helped set up day-care centers for working mothers in Alexandria. She twice chaired the Alexandria Republican Committee and was a charter member of the Alexandria Woman's Club. She was a volunteer tour guide at the U.S. Capitol from about 1950 to 1965.

From 1965 to 1967, she was president of the Alexandria Association, an organization devoted to historic preservation and restoration. She also served as president of the board of trustees of the Virginia Diocesan Homes of the Episcopal Diocese of Virginia.

She was a member of the Alexandria Bicentennial Commission, Alexandria Archaeological Commission and on the governor's advisory committee on archaeology. She was on the boards of the National Capital Area Federation of Garden Clubs, the Little Theatre of Alexandria, the Alexandria Historical Society, the YWCA and the old St. Agnes School in Alexandria. She also served on the women's committees of Smithsonian Associates and the National Symphony Orchestra.

Her other affiliations included the National Society of Daughters of the American Revolution, the Girl Scouts, Old Town Citizens Association, Salem College Alumnae Association and various other historical and educational groups.

Mrs. Councilor was a member of Christ Church in Alexandria.

From 1986 to 1995, she and her husband lived in Fearrington Village, N.C. She returned to Alexandria 10 years ago to live with her daughter.

Her husband of 64 years, Harry A. "Chalky" Councilor, died in 1995.

Survivors include two daughters, Joan C. Renner of Seven Lakes, N.C., and Susan C. Jocelyn of Alexandria; two grandchildren; and three great-grandchildren.