Codeword dictionary : a compilation of military and law enforcement codewords from 1904 to present : Adkins, Paul, 1958- : Free Download, Borrow, and Streaming : Internet Archive
Working Against the Tide (COMSEC Monitoring and Analysis) : NSA : Free Download, Borrow, and Streaming : Internet Archive
Bentley's complete phrase code (nearly 1000 million combinations) with at least 2 letters difference between each half-code word) : Bentley, E. L : Free Download, Borrow, and Streaming : Internet Archive
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Telegraph: All New Codewords Volume 7: A cracking collection of over 200 puzzles to challenge your logic and vocabulary (The Telegraph Puzzle Books): Amazon.co.uk: Telegraph Media Group Ltd: 9780600636687: Books
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Printable Codeword Puzzles | Printable Crossword Puzzles | Printable crossword puzzles, Crossword puzzles, Crossword
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