21 oral history interviews released by NSA 6 Oct 2015 (1,552 pp)
   [1]https://cryptome.org/2015/10/nsa-15-1006.zip (46MB)
   Source:
   [2]https://www.nsa.gov/public_info/declass/oral_history_interviews.shtm
   l
   Emacs!

References

   1. https://cryptome.org/2015/10/nsa-15-1006.zip
   2. https://www.nsa.gov/public_info/declass/oral_history_interviews.shtml