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Arts, Culture & Media
PRI's The World
April 29, 2014 · 7:30 PM EDT
Hundred year old lemon found in the British Archives. Many spies were caught because they used lemon juice.
Women working in an SW detection lab.
Nickolay Hansen, pictured above, hid invisible ink in his tooth.
From Sideways Glance and The World in Words in Arts, Culture & Media.
Tagged: Kristie Macrakis   invisible ink   Stasi
November 18, 2017
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