for example dmitri -- who left leptin united states 55 micrograms of original documents much of which our military and police documents. so if you read through those documents that dmitri used for his book you get a lot of access to things like military counterintelligence which otherwise would be blocked from seeing. in addition the military counterintelligence archives is bragging about his history and publishing document corrections. tremendous amounts very large substantial multivolume document collections are published by the archives to try to show that they worked pretty well in the past. so the documents are selected and you have to be careful in their use but nonetheless there's a gigantic treasure trove of military counterintelligence documentation which is available in american libraries in published form. in addition there are a handful of scholars who are still alive and had access to these archives archives. for example donatich has had access and they have published their own books. 500 pages, 600 pages based upon original documentation which that quote a lot of access