Settings, keys, hats, and head scratching : the headline puzzle. - Derthick, Paul.; Hatch, David A.; Safari eBooks ([Fort George G. Meade, Maryland] : Center for Cryptologic History, National Security Agency, 2003)
Description based on print version record.
"The puzzlemaster was Paul Derthick, a longtime research analyst in NSA's Operations Organization"--Page 1.
"For the first few months, the "Headline puzzle--an NSA original" alternated issues with an interesting but exceptionally short crossword puzzle. By April of 1965, however, the Headliner Puzzle had become a monthly feature. In 1971 puzzle solvers were challenged not only to decipher the headlines, but to recover the setting word, keyword, and "hat" for the puzzle as a whole"--Page 1.
Introduction by David A. Hatch.
Keywords: Cryptograms; Puzzles; Electronic books