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The ancient art of hidden writing - BBC News
www.bbc.com
Modern-day spies may hide text in images but the technique has much older origins.
13. Dezember 2016: Ausstellungseröffnung am Todestag von...
lbz.rlp.de
Es werden Handschriften und Drucke der Werke von Johannes Trithemius aus rheinland-pfälzischen Bibliotheken gezeigt. Die Ausstellung ...
German monk's 500-year-old mystery solved
old.post-gazette.com
Johannes Trithemius, a German abbot, leading scholar and counselor to Emperor Maximilian I, had found a means of delivering messages within 24 hours that required …
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