CIA declassifies final secrets of WWI 

Secret writing ink and the ability to open letters without detection are just some of the clandestine tools exposed Tuesday when the CIA declassified its oldest documents from as early as 1917.

Who would of thought that the memorandum containing the formula for German invisible ink was kept closely guarded for more than a century in the U.S.?

 “These documents remained classified for nearly a century until recent advancements in technology made it possible to release them,” CIA Director Leon E. Panetta said in a press release Tuesday. “When historical information is no longer sensitive, we take seriously our responsibility to share it with the American people.”

The documents “which describe secret writing techniques and are housed at the National Archives, are believed to be the only remaining classified documents from the World War I era,” the CIA press release stated.

Documents “describing secret writing fall under the CIA’s purview to declassify,” it said.

For those interested in taking a peak at the documents, they are available on CIA.gov and in the CIA Records Search Tool (CREST) at the National Archives in College Park, Maryland.

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Sara A. Carter

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