Here's the CIA file for Gehlen counterintelligence projects:
   [1]https://archive.org/details/UJDROLLERY
   Enjoy. More
   at [2]http://that1archive.neocities.org/subfolder1/early-cia.html
   --Mike
   [3]http://that1archive.neocities.org

References

   1. https://archive.org/details/UJDROLLERY
   2. http://that1archive.neocities.org/subfolder1/early-cia.html
   3. http://that1archive.neocities.org/