The Shakespearean ciphers examined

The Riverbank Publications, Vol 3 (C-25)

Advanced Military Cryptography (Cryptographic Series , No 8)

Military Cryptanalysis, Part I, Monoalphabetic Substitution Systems (Cryptographic Series, C-30)

Military Cryptanalysis (Cryptographic Series , So4)

The Index of Coincidence and Its Applications in Cryptanalysis (Cryptographic Series , No 49)

Military Cryptanalysis, Part IV

Military cryptanalysis

Six lectures concerning cryptography and cryptanalysis

Index of Coincidence and It's Applications in Cryptography (No. 22)

Military Cryptanalytics (Cryptographic Series , Vol 1, No 44, Part 2)