KRYPTOS: A Pacific Northwest Cryptanalysis Contest for Undergraduates. - Cheryl L. Beaver; Stuart Boersma (Cryptologia, 2012)

Celebrating ten years of KRYPTOS: a series of cryptanalysis. - Cheryl L. Beaver; Stuart Boersma (Cryptologia, 2020)

Review of The Woman All Spies Fear by Amy Butler Greenfield and Code Breaker, Spy Hunter by Laurie Wallmark, Illustrated by Brooke Smart. - Stuart Boersma; Jean Marie Linhart (Cryptologia, 2023)

Elizebeth Smith Friedman and one example of a prohibition era encryption system. - Stuart Boersma (Cryptologia, 2023)

Complete examples of encryption systems broken by Elizebeth Smith Friedman: 1923-1934. - Stuart Boersma (Cryptologia, 2023)

Elizebeth Smith Friedman's recovery of the wiring of two rotors from an enigma D machine. - Stuart Boersma (Cryptologia, 2024)