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Chaptra

Ciphers

  • 4 books
Cover of Mathematical Recreations and Essays

Mathematical Recreations and Essays

W. W. Rouse (Walter William Rouse) Ball

Cover of Elementary cryptanalysis

Elementary cryptanalysis

Helen Fouché Gaines

Cover of Manual for the Solution of Military Ciphers

Manual for the Solution of Military Ciphers

Parker Hitt

Cover of Ciphers for the little folks : $b A method of teaching the greatest work of Sir Francis Bacon, baron of Verulam, viscount St. Albans

Ciphers for the little folks : $b A method of teaching the greatest work of Sir Francis Bacon, baron of Verulam, viscount St. Albans

Dorothy Crain