https://www.archives.gov/files/research/jfk/releases/2022/10...
... not relevant to the JFK assassination, but it kind of shows you how they would go about researching subjects they weren't already knowledgeable in.
https://www.archives.gov/files/research/jfk/releases/2022/10...
... not relevant to the JFK assassination, but it kind of shows you how they would go about researching subjects they weren't already knowledgeable in.