A symposium was held September 18–20, 1957, at the National Bureau of Standards, Washington, D.C., on the Formation and Stabilization of Free Radicals. The title of the meeting reflected the current interest of sponsors' committee representatives, Professor F. O. Rice of the Catholic University of America, Dr. S. N. Foner of the Applied Physics Laboratory of Johns Hopkins University, Professor Roy Anderson of the University of Maryland, and Dr. A. M. Bass of the Bureau of Standards' Free Radicals Research Section, who served as chairman of the Symposium Committee.