Cipher writing
Publisher: The Encyclopedia Americana
Published: 1937
Place of publication: New York
Language: eng
Subjects: Ciphers; Cryptography
Notes: Galland, p. 125.

Reprint from the Encyclopedia Americana, pp. 688-690, 19-37. Bound in paper wrappers; printed in black.

Inscribed by the author for George C. Lamb.

Library of the Americana Cryptogram Association (George C. Lamb Collection).