The CIA Manual Of Trickery And Deception

In the '50s, the CIA hired magician John Mulholland to teach them espionage tricks. The resulting manuals, which have recently been declassified, are kind of awesome. Here are a few fun ones from the new book on the topic, illustrated by The Boston Globe. (via Kottke)

• Hidden Signals

  

• Rubbing the Back of the Neck

  

• Document Handling