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April 17, 2018
April 2018 Puzzle Periodical - 'APRIL = MATH'
April 2018 NSA Puzzle Periodical - 'APRIL = MATH' - Mathematics and Statistics Awareness Month Challenge by Benjamin E.
Dec. 19, 2017
December 2017 Puzzle Periodical - Reindeer Games!
December 2017 Puzzle Periodical - Reindeer Games; Puzzle created by Benjamin E., NSA Mathematician