Many inventions in catalogue, Per Ardua Libertas, were brainchild of … – Daily Mail


Daily Mail

Many inventions in catalogue, Per Ardua Libertas, were brainchild of
Daily Mail
The inventions in the catalogue, compiled to teach US intelligence officers the secrets of British espionage, were hidden in food and supply parcels delivered to British PoWs by the Red Cross. Some of the fascinating gadgets include maps of Germany

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