Riverbank, Geneva Ill. Riverbank Laboratories Department of Ciphers 1918. First Thus. [28] pages. Oblong 22x28.5 cm. No limitation stated. Stiff brown publisher's wraps with cover titles duplicating title page (as issued). Black cloth spine as issued. Fine. Wraps.

The last 26 pages comprise 'Synoptic Tables for the Star Cipher'..... More