To retain his influence, Fabyan offered at his own expense to set up a training school at Riverbank, where military officers and others could take a crash course in code techniques. Before they departed for Europe, the trainees—seventy-one of them, plus William and Elizebeth and Fabyan and a few others—lined up for a panoramic photograph in front of the Aurora Hotel, where the trainees were staying. Each was told to look either to the side or straight ahead. They were creating a biliteral cipher spelling out “Knowledge is power,” one of Francis Bacon’s favorite phrases. Unfortunately they
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