The Super Spies: The Inside Story of NSA, America's Biggest, Most Secret, Most Powerful Spy Agency (1969) By Andrew Tully
 
Up to now the workings of America's super-spy agencies have been known only to the highest government officials. Here, for the first time, one of Washington's most knowledgeable journalists penetrates the inner sanctum of American espionage and reveals the inside story of spy organizations more powerful and more secret than the CIA. Certainly the most powerful of all is the National Security Agency (NSA), whose specialty is electronic spying and cryptography.
 
Hard Cover with Dust Jacket
256 pages 
In Fair to Good Condition