NSA Declassifies 200-Year-Old Book

A cryptology instruction book… 202 years old. A photograph of the U.S. Army’s cypher bureau… from 1919. A breakdown of Russian electoral districts… circa 1948. Schematics for a magnetic tape memory system… nearly half a century old.

These are just some of the items that, had you seen them, would have irreparably damaged US national security. These are just a few of the documents, mere citizen, that for decades were far too sensitive for your uninitiated eyes — via redwolf.newsvine.com