I re-read the first line of the story by Robinson. It states the archives were open in 1991 but did Tim Robinson of the London Times find this memorandum re Kennedy then, or did it just surface as news as a recent discovery?
I found the answer. Indeed it was out there already. Tim Sebastian of the London Times and BBC, found the Kennedy document and reported it in the February 2, 1992 edition of the Times, in an article titled, “Teddy, the KGB and the top secret file.”