Riverbank Publications No. 18 Synoptic Tables for the Solution of Ciphers and a Bibliography of Cipher Literature with original folder
Geneva, Illinois: Riverbank Laboratories 1918. First Edition. 16 pages plus 9 tables (7 folding) 22.3 x 28.6 cm cm. Stiff tan publisher's wraps with cover titles duplicating title page. One of 200 copies per limitation statement on copyright page. Provided in the originally issued Riverbank Laboratories button and string flapped..... More