We’ve been looking through the National Archives…and found something no one has noticed yet…the memo is a response from the CIA to the FBI, indicating the Bureau asked the Agency about the legitimacy of an earth-shattering report.
Sources
National Archives file of Monroe-RFK-JFK-MJ12 wiretap report and CIA evaluation: https://www.archives.gov/files/research/jfk/releases/2018/104-10338-10005.pdf
Monroe FBI file: https://vault.fbi.gov/Marilyn%20Monroe/marilyn-monroe-re-processed-2012/view