HARVAN - A almost certainly defunct classification compartment or dissemination marking (employed by the White Home within the 1970s) Complete set up cannot be found on the web AFAIK, but even snapshots from it expose familiar codewords from this web site and from your TAO & GCHQ codeword web pages https://codeword90099.blogolenta.com/37064906/5-easy-facts-about-codeword-described