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Riverbank Publications No. 20 Several Machine-Ciphers and Methods for Their Solution. 2nd Impression

Riverbank, Geneva Ill. Riverbank Laboratories Department of Ciphers 1918. Reprint. [2], [1]-58, [28] pages 28.5 cm. Provided in the originally issued Riverbank Laboratories button and string flapped manila envelope with limitation number on outside. Individually numbered limitation of 200 copies (so stated on copyright page). This is the SECOND IMPRESSION..... More

Item #26111

Price: $100.00

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