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In 1918, during the last months of the First World War, a woman living in Southern Germany received two encrypted postcards from her lover. Can a reader find out what he wrote?
Olivia von Westernhagen, who works as a journalist for the German computer magazine c’t, has provided me an article she wrote, which is based on material she found on my blog. It’s a great read, but it’s available in German only.
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