The Solution of Codes and Ciphers; The New Problem Book
London: Alexander Maclehose & Co, 1936. First Edition. Hardcover. Octavo. x + 162pp. Original green cloth with red lettering to upper board and spine, b&w illustrations. A practical introduction to codes and ciphers. From the publisher: "Mansfield sets the ball in play for the beginner. Progressing by easy stages, which are fully illustrated by numerous examples he goes on to more intricate methods of ciphering and deciphering. Thus the Cipher Tables of Vignère, Porta, and Napoleon are taken step by step ... so that anyone who is old enough to read can follow the various examples accurately." Edges rubbed, spot fading to top and bottom of spine, endpapers unevenly brown, owner's blind seal on front blank, page edges darkened and pages toned but unmarked. A tight, clean VG+ copy in Fair dust jacket (Dust jacket darkened and discoloured, well worn chipped and creased, not clipped). Item #62186
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