Vol. 13, No. 1 (January, 1946) - Vol. 13, No. 12 (December, 1946). Run of 12 issues of this monthly published by A. C. Kalmbach and Co. in Milwaukee, Wisconsin. Bound in publisher's binding with the original covers bound in. 
Illustrated with b/w photos. Omaha: Kratville Publications, (1966). Small 4to. Decorative boards. 97 p. + photos & folding charts. 1st edition. "The Story of Southern Pacific GS Class Locomotives" 
Illus. with photos. Boulder, Colo.: Pruett Press, Inc., (1962). Small 4to. Cloth. x, 417 p. + two folding maps in pocket at rear. 1st ed. No. 3638 of 4000 copies. Extra shipping for this large & heavy book.