Dr. Mildred Sandison Fenner Reid, 75, a former editor of the NEA Journal who had worked for the National Education Association for nearly 45 years before retiring in 1975, died of cancer Nov. 8 at her home in Washington.

Dr. Reid moved here and joined the NEA Journal in 1931. She became its managing editor in 1952 and its editor three years later. After retiring in 1975, she worked for a time as director of the educational services department of Ringling Brothers, Barnum & Bailey circus.

She was the author of books on both education and circuses, as well as numerous technical works on teaching. She was a past national president of the Horace Mann League and served as secretary-treasurer of the Educational Press Association. She was a member of the Woman's National Democratic Club and Americans United for the Separation of Church and State.

She also was a member of Christ United Methodist Church in Washington. She had taught for 25 years in the Sunday School at the Mount Vernon Place United Methodist Church.

Dr. Reid was a native of Missouri and a graduate of Northwest Missouri State University. She earned a master's degree and a doctorate in education at George Washington University.

Her first husband, Wolcott Fenner, died in 1972.

Survivors include her husband, Ernest G. Reid of Washington, and a sister, Dorothy Culver of Gaithersburg.