by Dare A. Wells and Harold S. Slusher. by Edgar C. Bain and Harold W. Paxton. by Carl B. Braestrup and Harold O. Wyckoff. by Theodore J. Williams [and] Verlin A. Lauher. by George A. Works and Simon O. Lesser. by P. W. Abeles and F. H. Turner. by Walter A. Rutes and Richard H. Penner.