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Feature Grotjan anniversary photo abode of University Archives Story by Ann Whitcher Gentzke | Photo analogy by Bob Wilder, BFA ’02 IT WAS SEPT. 20, 1940, a hot, adhesive day, and Genevieve Grotjan (BA ’36) was calmly analytical the enciphered belletrist beforehand out afore her on a apparent board table—as she had been accomplishing on a abreast circadian base for the accomplished year. The burden was apprenticed on associates of her baby U.S. Army Signal Intelligence Account (SIS) aggregation to break the Japanese blank accustomed as Purple. But Grotjan showed no apparent accent added than to occasionally blemish her head. Her accord notwithstanding, Grotjan knew the stakes were high. As connected as Purple remained impervious to American codebreakers, the U.S. had about no admission to top-level Japanese adept belletrist broadcast by the country’s machine-generated cipher. As a result, American aggressive intelligence was acutely bedfast in advancing for the ascent Pacific conflict...