NSA Museum Library has provided "Hagelin M-209 Cryptanalysis from Ciphertext Alone"

NSA Museum Library has provided "Hagelin M-209 Cryptanalysis from Ciphertext Alone," Reeds, Ritchie, Morris, 1978. <https://t.co/MbE5UNMtzb>https://cryptome.org/2015/12/ReedsTheHagelinCipherBellLabs1978.pdf NSA would not release it under FOIA, claiming it was a private paper. Back story: http://bell-labs.com/usr/dmr/www/crypt.html