WW1 German secret writing - a newly declassified CIA report

[rod-on]

The CIA have just released its oldest secret documents, the formula for German Secret Writing.

http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-two.pdf]http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-one.pdf
[url]http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-two.pdf
http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-three.pdf
http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-four.pdf
http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-five.pdf
http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-six.pdf
[/url]
Will the SP world be flooded with blank paper hiding secret inventions and clandestine gadgets?
or purloined letters of romance from Matta Hari and her ilk?

[pakled]

The first one must have been reclassified, it came back as not found...

Considering the CIA was founded in '47 (and the Allies occupied Germany briefly after WWI), it's probably not that secret...but hey, a person can ponder, wot?...

[Julian]

The url is messed up.  It should be http://www.foia.cia.gov/CIAsOldest/Secret-writing-document-one.pdf

The file is in French, so it is still in code for me. 

[pakled]

Pardon my French as well...
There's an older book called (I think) Codebreakers, by someone named Kahn (again I may have misspelled it), but if you like that kinda stuff, it may be out there...