One hundred problems in cipher.
Publisher: A. Maclehose & co
Published: 1936
Place of publication: London
Language: eng
Number of pages: 223
Subjects: Ciphers.; Cryptography.
Notes: First edition. Galland, p. 119.

Bound in bright green cloth; stamped in orange.

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