New York: Simon and Schuster, (1971). First Edition, First Printing. Hardcover. Octavo. 6.25 x 9.25 inches. 96 pp. Illustrated with reproductions of photographs, and diagrams. With drawings by Ted Schroeder. Near fine in original pale green decorated boards and near fine mildly spine darkened dust jacket retaining the original $4.95 price and with the juvenile library price clipped from the lower front flap, as issued. Item #32631
Signed by Martin Gardner on the title page. Scarce, thus.