I have published 3 cryptogram books. All books are done in large print - making it easy on the eyes, double - spaced with room to write your answers within the puzzle and a line separates each puzzle. Cryptograms (aka cryptoquips, cryptoquotes, word puzzles) are a great exercise for the mind. Both pattern recognition and linear thought are necessary in code breaking. This is an excellent exercise to train the mind to think using both halves of the brain.