Julia a. Lacy, 74 a retired editor for the National Council of Teachers of Mathematics and a former Washington resident, died of cardiopulmonary arrest Thursday at her home in Carroll Valley, Pa.

She and her husband, the Rev. Grahman G. Lacy, moved to Pennsylvania after they bouth retired in 1972. Mr. Lacy was the last pastor of the 104-year-old Central Prebyterrian Church here, where he served for 25 years. 1

During World War II, shile her husband was a military chaplain overseas, Mrs. Lacy was an editor for a publishing house in Nashville.

After moving here with her husband in 1947, she continued her editing career. She edited the monthly publication of the Genereal Commission on Army-Navy chaplains for about five years before joining the National Education Association, where she edited publications for mathematics teachers. She was an editor with the National Council of Teachers of Mathematics for about 15 years before retiring.

Mrs. Lacy was born in Chattanooga, Tenn. She graduated from Wellesley College and earned a master's degree in philosophy from Columbia University. c

She and her husband, who celebrated their 50th wedding anniversary last year, also maintained a home in Penney Farms, Fla.

Besides her husband, of Carroll Valley, survivors include a daughter, Margaret L. Dodds of South Natick, Mass.; a son, Graham S. Jr. of Greensboro, N.C., and five grandchildren.

The family suggests that expressions of sympathy be in the form of contributins to the Penney Memorrial Prebyterian Churcy, Penney Farms, Fla.