大象传媒 Radio 4 - The Long View, John Thurloe, Cromwell's postmaster, and the interception of mail, The interception of mail - Cipher used by Sir George Downing between 1657-1659

The Long View John Thurloe, Cromwell's postmaster, and the interception of mail The interception of mail

Ciphered letters from the British Library

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Original letters and papers relating to the Commonwealth 1655-1659. British Library.

The Long View—John Thurloe, Cromwell's postmaster, and the interception of mail

Today's debates about online privacy have 17th-century precedents. With Jonathan Freedland

大象传媒 Radio 4