Solving Simple Substitution Ciphers
The American Cryptogram Association, 1959. Reprint. Stapled Pamphlet. 2nd printing. {6' x 9'} Stapled pamphlet with two staples. Sun lightened fold. Dust stained margins. [43 pages]. More
The American Cryptogram Association, 1959. Reprint. Stapled Pamphlet. 2nd printing. {6' x 9'} Stapled pamphlet with two staples. Sun lightened fold. Dust stained margins. [43 pages]. More