editor in chief, William D. Mahoney ; senior editor, John J. Moylan ; contributing editors, Roger J. Grant, Melville Mossman ; technical writer, Julia C. Willard ; illustrator, Carl W. Linde
publisher, E. Norman Peterson, Jr., editor-in-chief, William D. Mahoney, senior editor, F. William Horsley, contributing editors, Allan Cleveland ... [and others] ; illustrations by Carl W. Linde, John Brennan, Harold L. Jordan
editor in chief William D. Mahoney, senior editor, Edward B. Wetherill, contributing editors, F. William Horsley, Arthur Thornley ; illustrator Carl W. Linde
editor in chief, William D. Mahoney ; senior editor, Roger J. Grant ; contributing editors, Alan Cleveland ... [and others] ; illustrators, Carl Linde, Harold L. Jordan
[editor-in-chief, William D. Mahoney ; senior editor, Allan B. Cleveland ; contributing editors, Donald D. Denzer ... et al. ; technical coordinator, Marion Schofield]