Shmoocon Among the 400,000 graves at the Arlington National Cemetery – a solemn US military graveyard in Virginia – lies the final resting place of cryptography pioneers William and Elizebeth Friedman. And hidden in code on their tombstone is a touching tribute from a wife to her husband.

Among the 400,000 graves at the Arlington National Cemetery – a solemn US military graveyard in Virginia – lies the final resting place of cryptography pioneers William and Elizebeth Friedman.

And hidden in code on their tombstone is a touching tribute from a wife to her husband. A code that’s only now just been cracked, decades after it was engraved in the cool stone.

William, born 1891, and Elizebeth, born a year later, married in 1917.

Among many cryptological feats, the couple trained America’s first cadre of code-breakers after developing an interest in cryptography while examining the so-called Baconian cipher – developed by the British Elizabethan cryptographer Sir Francis Bacon.

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