Prepared by a staff of specialists; Douglas M. Considine, editor-in-chief. prepared by 110 specialists ; Douglas M. Considine, editor-in-chief. prepared by 142 specialists ; Douglas M. Considine, editor-in-chief. ... prepared by a staff of specialists, Donald M. Liddell, editor-in-chief. prepared by a staff of specialists J.Kenneth Salisbury editor. prepared by a staff of specialists. Assistant editor: H. L. Pinkerton. prepared by a staff of specialists; Archer E. Knowlton, editor-in-chief, R. M. Shoop, assistant editor. prepared by a staff of specialists. Editor: A. Kenneth Graham; assistant editor: H.L. Pinkerton. Douglas M. Considine, editor-in-chief. prepared by a staff of specialists under the editorship of Joseph J. Mattiello.